right now on "america this morning," a new push forward in the race for a vaccine. >> it's like there's a race, and the prize is you get to save humanity. >> what we're learning about two experimental vaccines and the next step. cases surging in florida. why teachers are suing the governor. plus, hospitalizations hit a new record in los angeles. disney world tightens mask requirements, and we hear from the one kentucky family now under house arrest for refusing to quarantine. breaking overnight, federal agents gearing up to deploy to chicago. a major new step in the growing controversy over sending federal forces into cities to fight crime. how the mayors of several big cities are now protesting. also breaking overnight, new details about the self-proclaimed anti-feminist

accused of attacking the family of a federal judge killing her son. now word authorities are investigating whether the suspect is linked to another murder. plus, bean bust. why police say these coffee beans are packing a very dangerous kick. the future of fast food. the high-tech meat that could have kfc revamping its menu. and more of our exclusive one-on-one with alex trebek. what you didn't know about the "jeopardy" host and some of the salty language he uses. good tuesday morning, everyone. president trump is bringing back his daily briefings on the coronavirus as cases rise in much of the country. >> despite encouraging news about two potential vaccines, there's evidence of growing concern in many states. for example, teachers in florida are now filing a lawsuit hoping to stop schools from re-opening. >> after an uptick in daily cases, chicago has become the

latest city to reimpose restrictions on bars, restaurants and gyms. in washington talks are now under way for a new economic stimulus plan with millions of americans set to lose unemployment benefits at the end of the month. >> abc's megan tevrizian begins our coverage starting with new information on those potential vaccines. >> reporter: this morning, new hope for stopping the coronavirus as two new vaccines move into the next phase of trials. >> it's like there's a race, and the prize is you get to save humanity. >> reporter: at oxford university, a double blind test showed the experimental vaccine is not only safe, but seemingly creates virus fighting antibodies. >> it was the first human safety trial three days after the vaccine, i had a day of just complete tiredness and aching muscles. >> reporter: meanwhile, drug giant pfizer said it's developing a vaccine that may work against multiple strains of covid-19. >> and then when you move to the

efficacy trial, you actually determine, does the vaccine work to prevent infection, so that's the next big step, and it's a big step. >> reporter: while acknowledging there is a long way to go, the the country's leading health officials say we could see an effective vaccine available by year's end. >> by the end of 2020 we will have one, two or maybe three vaccines that have been proven safe and effective. by spring of '21 we would have most americans able to receive the immunization. that's my optimistic view. >> reporter: it comes with coronavirus cases rising in 40 states. los angeles county now reporting a record number of hospitalizations. >> it is our decisions, not our conditions, our decisions that will determine our fate and future. >> reporter: california now postponing all high school sports through the fall. >> if you had been infected -- >> shame on you. >> if you had been infected -- >> reporter: in florida hecklers interrupted the governor's news conference, the state plagued

with testing delays and now reporting more than 10,000 new infections for the sixth consecutive day. teachers in the state now suing to stop what they call the reckless and unsafe re-opening of schools for in-person classes. >> and we don't want to put people at risk. there is a known risk. >> the emergency order completely ignores the cdc criteria. >> reporter: in kentucky where cases hit a new high over the weekend, officials are going as far as placing an infected family including their young daughter into mandatory quarantine after they refused to sign contracts promising to stay home. >> there was no trying to help the situation at all. so it just resulted in the police showing up at our house two days later, no contact, no nothing. just court orders like we're criminals. i said, i have no problem self-quarantining, i said, but if i have to leave my house to get a necessity for an emergency, i'm going to do that without your prior consent. >> reporter: meanwhile in washington president trump is set to resume coronavirus

briefings as soon as today. one day after tweeting a picture of himself wearing a mask saying, many people say that it is patriotic to wear a face mask when you can't socially distance. there is nobody more patriotic than me. presumptive democratic nominee joe biden slamming the president last night. >> there is no leadership here. this guy has no sense of empathy or concern for people. people are dying, dying. >> reporter: meanwhile, this morning there is concern about more covid outbreaks being linked to churches. west virginia has confirmed dozens of new covid cases across seven counties. kenneth, mona. >> megan, thank you. and disney world has updated its face covering policy just ten days after re-opening. eating or drinking while walking through the park is mo longer allowed. guests can still remove their masks to eat and drink but not while strolling. once the mask comes off, they must remain seated and six feet from other visitors. we turn now to the showdown

over federal agents fighting crime in american cities. the department of homeland security is gearing up to send agents into chicago. local leaders are already blasting the trump administration for sending federal agents to other cities including portland, oregon. some mayors claim it's an abuse of power, but the white house says the ongoing street violence in those cities is unacceptable. this morning, more federal agents are reportedly heading to a major american city. justice department officials tell our chicago station wls that more than 100 federal agents from numerous u.s. law enforcement agencies are heading to the city this week as part of an expansion of a program aimed at what the doj calls a sudden surge in violent crime the decision comes after they say 63 people were shot in the city over the weekend. now there's growing controversy about the trump administration sending federal forces to other american cities. portland federal agents clashed with protesters over the weekend as demonstrators broke into the portland police union building and set it on fire. city and state officials are

demanding the agents leave the city. >> i had a conversation with the secretary of homeland security last week and told him, go home. we do not want your officers here. he said, basically in no uncertain terms, tough, we're here to stay. >> this is the kind of thing that happens in a totalitarian regime, and so my message for the american public is this, this could happen in your city too. >> reporter: acting homeland security secretary chad wolf responded to portland's mayor calling the mayor's comments irresponsible. >> the facts don't lie, and the facts are that these violent anarchists and extremists were violent well before dhs surged federal assets into portland. >> reporter: this morning, mayors from these six major cities have signed a letter to the trump administration saying the use of federal agents mirrors the very tyranny our country has fought against and is wholly inconsistent with our democracy. but on monday the president said he would consider using federal forces in more cities. >> we're not going to let new york and chicago and

philadelphia, detroit and baltimore and all of these -- oakland is a mess. we're going to have more federal law enforcement. that i can tell you. >> in response to reports about agents heading to chicago, homeland security tells abc news the agency does not comment on alleged operations. new this morning, another legal loss for the makers of the weed killer roundup. a california appeals court has upheld a verdict that found monsanto's weed killer caused cancer in a school groundskeeper but the court reduced the damage award from 78 million to 21 million. a jury in 2018 found the company ignored evidence that the active ingredient in the weed killer can cause cancer. and new overnight a massive fire on a southern new jersey farm. flames tore through an agricultural building in pilesgrove near wilmington, delaware. no word of any injuries to people or animals. time now for a look at your tuesday morning weather. red flag wildfire warnings

are being posted from california to colorado today because of storms that will produce lightning but very little rain. gusty winds will help spread any new fires. in western wisconsin a confirmed tornado with winds over 100 miles per hour left behind this damage. no one was hurt. a witness says all the destruction was caused within about 30 seconds. checking today's high temperatures, low 80s in chicago and detroit. low 90s for new york and across much of the south as well. coming up, a new warning about climate change and how soon polar bears could go extinct. also ahead, new details about the man accused of shooting the family of a federal judge disguising himself as a fedex worker. reports now linking him to another attack on a lawyer. and why this couple seen waving guns at protesters outside their mansion are now facing charges.

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take a look at this scene on the island called the lighthouse of the mediterranean. a volcano erupted on stromboli off the coast of sicily. it's been active for thousands of years. no one was hurt. polar bears could be extinct by the end of this century unless more is done to address climate change. that's according to a new study. researchers say the shrinking amount of arctic sea ice is forcing the bears onto land farther away from their food supply. the study warns many bears will be lost even if global warming is moderately reduced. a new twist this morning in the case of a deadly attack on the family of a federal judge in new jersey. investigators say the gunman was a prominent manhattan lawyer who once called the judge incompetent, and now authorities are reportedly investigating whether the suspect carried out another deadly attack in california. abc's reena roy has more. >> reporter: this morning, new

details about the attorney and self-described anti-feminist accused of killing a federal judge's son and wounding her husband. investigators say roy den hollander dressed in a fedex uniform sunday and opened fire on judge esther salas' new jersey home when her son and husband answered the door. >> someone following him, not that way. >> reporter: according to "the new york times," federal authorities are also investigating whether den hollander is connected to a murder in san bernardino, california, earlier this month when men's rights attorney marc angelucci was shot at his front door by a gunman also wearing a fedex uniform. in a 2015 case before judge salas, den hollander represented a woman who wanted to register for the military draft. he was replaced as her lawyer last june before the case was fully resolved. it's unclear why, but it appears den hollander held a grudge against judge salas writing in a

self-published book that she is, quote, a lazy and incompetent latina judge appointed by obama. den hollander is also known for suing nightclubs over their ladies night discounts. here's what he told abc news in 2007. >> i'm now trying to turn these tables of equality on the feminazis who have changed this country. >> reporter: after sunday's shooting in new jersey, police say den hollander was found dead from a self-inflicted gunshot wound about 100 miles from the crime scene. sources say a fedex package was in the car with judge salas' name on it. "the new york times" reports hollander had cancer, and investigators are exploring whether he was trying to, quote, take out his enemies. abc news has not independently verified that information. kenneth, mona. >> reena, thank you. a st. louis couple who pointed their guns at protesters outside their mansion have now been charged with unlawful use of a weapon. an attorney for the couple insists they were entitled to

protect their home from a potential threat, but the prosecutor says the couple risked creating a violent situation during a nonviolent protest. coming up, the cocaine found in coffee beans. also ahead, big news about the upcoming football season. she's doing it again. no cover-up spray here. it's the irresistibly fresh scent of febreze air effects. [harsh aerosol spray] cheaper aerosols can cover up odors, buryiodors in a flowery fog. switch to febreze air effects! febreze eliminates even the toughest odors from the air. and it uses a 100% natural propellant to leave behind a pleasant scent you'll love. use anywhere odors can spread. freshen up, don't cover up. febreze air effects. where does your almondmilk almond breeze starts here with our almond trees in our blue diamond orchard in california. my parents' job is to look after them. and it's my job to test the product. the best almonds make the best almondmilk. blue diamond almond breeze.

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in the book. >> this is not me, and as long as i'm on chemotherapy, this will always be here when i'm in public, and that's fine. if i were no longer hosting the program, i would not be wearing the hairpiece. >> later on "good morning america" trebek reveals who he'd like to see replace him as host of "jeopardy" someday. and turning back to the coronavirus, new concerns about air-conditioning spreading the virus. earlier i spoke with dr. imran ali. i asked him what people should know during this heat wave. but we started with the encouraging new information in the race for a vaccine. i want to know what are your thoughts on the news monday about the experimental vaccine from oxford university. the early results seem very encouraging. but what are the next steps? >> well, mona, this is really exciting. the news from yesterday out of oxford, the oxford vaccine trial

which is being worked along with astrazeneca shows this new vaccine, which is already in that phase 3 clinical period, the final period before final approval, is showing so far that the volunteers who have gotten the vaccine actually not only built antibodies, but they also triggered t-cell immunity, which is another way to attack the virus, which gives the human body two different methods of attacking the virus, which is pretty exciting. so this vaccine could be potentially quite effective. >> and there are new questions about the accuracy of covid-19 tests. dozens of people including many nursing home residents received false positive results from a public lab in connecticut. they're blaming a flaw in one of the testing systems, but what does that say overall about the accuracy of testing? >> well, we are getting much better and much more accurate with our testing, i have to say that, and i think now we're moving to what we call a pooled testing strategy where we can

take five or ten samples and use one test at one time so we can get results faster. now, maybe in this case we're not quite sure exactly the investigation is still going on, but maybe in the pooled testing strategy, you are at a higher risk of getting these false positives if you don't do the follow-up test. >> and lastly, dr. ali, with a heat wave spreading across the country this week, we want to revisit the issue of whether air-conditioning can spread covid. what is the risk, and should people be concerned? >> well, you know, air-conditioning can harbor a lot of debris, a lot of, you know, things that get caught in filters, especially the air conditioners that are the window based and the portable air conditioners, but those filters are not the type of filters that will trap viral particles. >> our thanks to dr. ali. the nfl and the players union have reportedly reached a deal as training camp begins.

the league has agreed to daily covid-19 testing, and espn reports the league has agreed to eliminate preseason games. and good news from the nba's bubble strategy. new coronavirus testing produced no positive results. two players who previously tested positive left the bubble to quarantine. coming up, the ford mustang worth nearly $4 million. but first the future of chicken nuggets. what kfc is planning. mornings we for better things than rheumatoid arthritis. when considering another treatment, ask about xeljanz a pill for adults with moderate to severe rheumatoid arthritis when methotrexate has not helped enough. xeljanz can reduce pain, swelling, and further joint damage, even without methotrexate. xeljanz can lower your ability to fight infections. before and during treatment, your doctor should check for infections like tb and do blood tests. tell your doctor if you've had hepatitis b or c, have flu-like symptoms, or are prone to infections.

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this this is abc7 news. officials expect to announce new restrictions today as the number of coronavirus cases rise. . president trump threatened to snd federal agents to oakland to deal with protesters. the response from oakland mayor libby scha giants coach became the first woman to coach on the field. a lot to get to today, but good morning, everybody. tuesday, july 21st. before we get to all those stories, checking in with meteorologist mike nicco for a look at the day ahead. good morning, mike.

>> we made it through monday, how is your tuesday starting? >> good. >> good. let's keep it that way. let's talk about the weather. yesterday, cooler than average and how about more of the same. two miles of visibility and seven in petaluma. those were all a little bit lower earlier. the fog is on the move as are the clouds off from the ocean to the east. that means below average temperatures and where we had sunshine yesterday, expect a few more high clouds today. look at all the 60s from half moon bay and oakland 68 and everybody else in the 70s until you get to places like morgan hill, east bay valleys and 90s around lake port and ukiah. here's kumasi with more news. we want to take you to breaking news in oakland. a live picture of a really big fire that is burning on martin luther king jr. way and 29th

street. you can see the smoke coming from that building right now. here is what we know. this is a two-alarm fire and started around 3:00 this morning and it looks like from what we can see, the roof has collapsed. you can see a lot of smoke and even some flames still there on the side of that building. we don't know if anyone was in the building or if anyone was inside. we will keep monitoring this throughout the morning and bring you any updates as soon as they come in. san mateo county. the only bay area county still off the state's watch list but that could soon change. announce restrictions later today to stop the spread of coronavirus and build a better bay area. the county's case rate of 110.4 cases exceeds the state's benchmark of 100 per 100,000 residents. the bay area average rate of cases is about 124 per 100,000. abc7 news reporter julian

glover. what designation might mean, julian? >> hi, good morning, kumasi. we are at the edge of the diving board, that's the way the san mateo county supervisor summed up the situation the county is currently facing to see if it is added to the state's watch list as early as today. san mateo the only county in the bay area not on that watch list but county leaders believe that could change today. their last day open for the foreseeable future. >> the landscape of san mateo county is small businesses and we have to do our part. >> if we do get shut down our best options are to go outdoors. >> now, if san mateo county joins the rest of the bay area and gets added to the state's watchlist, churches, hair salons, nails, gyms, tattoo parlors will have to close or potentially move operations outside until the number of