we are talking about parkinsons with radio show host ron owens, his wife is here and his doctor. to get back to this book you edited on deep brain stimulation management. this is a long term. ron was talking about the medication he is on. for folks who get to a certain point, they might want to consider this, but take me back to the medication you were using earlier. has it changed? >> right. once we learned parkinson's causes a key chemical in the brain dopamine, we found a medication that can be used to replace those levels. fortunately, there have been a lot of advancements since the 1960s. the medication you are on, ron, a triple combination medication that allows the drug to get into the brain and work more effectively. last longer. you found a specific extended medication it tames i takes him into the bedtime to last through the night. we have a lot of different strategies, many which ron has not needed or tolerated. >> this is for far more advanced cases tan ron? >> yeah, brain stillsulation a pace maker for the brain, it's a stimulator that controls the movement symptoms.

owens. a lot of other headlines. let's get it over to ron and you're leading with a landslide in washington state. >> that is right dan, good morning to you and paula, sara welcome back. we do begin in washington state and a community on edge after an earth-shattering landslide. the earth crumbled snapping trees and wiping out chunks of this landslide in des moines washington state. they were ordered to evacuate. four homes suffered serious damage. officials there concerned because they say the earth has not stopped moving. >>> and in boston police officers holding a vigil overnight outside the hospital where a decorated officer is in critical condition this morning shot in the face in a shootout with a suspect after a routine traffic stop. the officer john moynihan was one of the officers, boston officers honored by president obama for helping save a transit police officer shot by the tsarnaev brothers allegedly by the tsarnaev brothers after the boston marathon bombings. the suspect in friday night's shooting was shot and killed by police

owens, abc news, dallas. >> this case needs somebody to step forward. who witnessed that. >> you're right. >> and say exactly what happened. >>> let's turn to ron claiborne with the other top stories we're tracking. good morning, ron. >> good morning to you, paula. dan. robert. good morning, everyone. >>> hazmat crews are on the scene in texas this morning where a train carrying a toxic chemical went off the rail. near the town of valley mills. among the cars, five tanker cars carrying the hazardous material methanol. an investigation is under way. >>> investigators in another case blaming a deadly fire that killed seven children in brooklyn on a malfunctioning hot plate left on the stove. the victims were siblings ranging from 5 to 15 years of age. their mother and a teenage girl managed to jump out of the window and are in critical condition. >>> now to the countdown to a possible nuclear deal with iran. with ten days before the deadline for the deal top u.s. and iranian officials say that an agreement is within reach. they hope to reach a rough draft of the deal by the end of next week. a final deal by the end of june would call for tehran to signific