welcome back to news 4 at 4:00, i'm pat lawson. >>> and i'm jim handly. now we're expecting a news conference in boston to begin in about 30 minutes and will britain it bring it to you live right now. investigators still have nobody in custody, despite searching the town of revere overnight. >>> jay gray has more on the investigation, and new firsthand accounts from people who were at the finish line. >> reporter: hey, there, good evening, pat, jim, more than ten square blocks still locked down as the investigators search for the suspect causing the blast. there is a high intensity security blanketing boston right now. this evening, there is an awkward, ominous silence in the city, military vehicles taking the place of thousands who had packed the marathon overnight. a day after the deadly bombings, boston is on high alert. >> everyone should expect continued heightened police presence and everybody should expect police to continue to be vigila vigilant. >> reporter: the explosives were packed with pressure cookers, explosives packed into duffle bags load

pat lawson muse in the newsroom with a preview. >> coming up this afternoon we will have live coveragef the terror take in boston. we will bring you the latest information as authorities continue their search for those responsible. also, how to cope with a national tragedy. we will have advice from the professionals about what to do with those feelings of grief. coming up, at 5:00, the pay faye nears a december identification the safety of portable electric ronnics on airplanes. what a retired pilot has to say about whether you really need to turn the devices off in plight. all those stories and the latest coming up on "news4 at 4:00." >> thank you so much, pat. we will see you then. >>> we will check on our forecast one pineal time for midday. tom? >> good morning. little sunshine breaking out as we approach the noon hour. view from space showing some breaks in the cloud cover now around the region. we will have a partly sunny afternoon. temperatures right now responding to a little bit of the sun coming out. now it is in the 60s to near 70 degrees. low and mid 70s by mid afternoon an

pat lawson muse's megan mcgrath is there live now. >> reporter: being a law enforcement officer can be a very dangerous job as this memorial demonstrates. carve flood the marble are the names of more than 19,000 law enforce many officers who have died in the line of duty. and just a short time ago, more names were added. we have the unveiling of those names here that we can show you. there are two that have a connection to our area. chris young was a 7-year veteran of prince william -- of the prince william county police department. on new year's eve he was responding to a call. his emergency lights and siren were on but as he went through an intersection he was struck and killed bay car. also being honored on the memorial is a national park ranger with a connection to our area. margaret anderson worked at the c and o canal national park from 2004 to 2008. she was later transferred to the mt. rainier national park in washington state and it was while there when she was making a traffic stop, she was shot and killed. their names are being added to the more than 19,000 other law enforcem

and their chief executive pat harrison who isn't here today but ably represented by jennifer lawson also a friend of many years has been extraordinary in helping us fulfill our desires to make the variety of films we've had the opportunity to make. they were in from the beginning. but when we surveyed the landscape of other possible funders, most shrank away from this very difficult subject. this recent history if you will. two groups stood out. one was the better angels society which is a nonprofit group that was started to help us fund our historical exercises. and bobby and polly stein of jacksonville, florida, stepped forward and made a significant grant. but no grant was more important, more central than the huge grant that came from the atlantic philanthropies. which made the largest grant of this particular production and indeed the largest grant i've ever received percentage wise for any film. upward of 75% of our entire budget. it was an amazing risk. and commitment. and we can't imagine having lived through the last several years which have been quite arduous producing the film