in speaking, though, with or landa police chief john mina today, i asked him what it was that lead officials to make the decision to go in and storm the building. and he said in part that it was the lack of demands on the part of mateen. that he wasn't looking for anything. he made some oblique references to having suicide vests. they believed he might force his hostages to wear them. but that his calm demeanor and his lack of interest in any further discussion left him-- left them, rather, no choice. they made that decision, of ortly after 5 a.m. am qui also tell that you as we big further into mateen's life the orlando sentinel, the paper of record here in the city have spoken to several eye witnesses who say that they actually have seen omar mateen frequent the pulse nightclub in question, as many as a dozen times. they said at times he would sit by himself but at other times he would become drunk, loud and we lige rant. that he would talk and say some rather awful things about his father and that he would also tell patrons that he had a wife and child. so again as officials here dig deep

and: a dangerous discovery landa pet the e-r. nee uncovers t stete you can take to avoioi scary y tutun. right now-- lanes of platte avenue a2e closed-- becausof a seris roll-ovevecras thappeneabout an hr ago pows evard. is is a live pturef th scenem- whwhe a a r is on s side. westbound d attetes osed... as sththsouthbound ramp om rs to westd platte. wororon injuries but policesay to avoid t t area. heheo and thanks for joining us for news five e ten. i'm rob quirk. d i'i'lisa lyden. 122-thousand. that's theumber of democra whturned out for c ccuses in colorado lght --a w rdbesting rnout fror 08 b2-thousand t the rnout and eneniasmsm during last night's s ucuses with tcucusystememn our parts.s. news 5's zach axton n s been partrttotoy. za, why e they so set? itit not j jt party ads that are upset -- it's voterstoo. consid a n-scienfic po taken by our denver r ster station last night -- a a opping 97- percent said they y ef a primary to a caus,nd now both partiti are askskto return to the prary system. vo#1 the turnrnt was incredi

. >> reporter: also helping out at the release, carolina landa. landa was released from the correctional facility last year after serving time for a drug offense. but she's now enrolled in the evergreen state college environmental science program-- a big change of direction she attributes to her time spent with the butterflies. >> here is an endangered species, and the fact that they were saying, yes, we trust you, yes, we believe that you can do this work. that very much played a big factor in me believing in myself, right, to start that path. >> reporter: the combined efforts, of all the various individuals and groups, are paying off: at this release site the butterfly population has doubled since last year to several thousand. and at joint base lewis-mcchord, the population has just been deemed to be self-sustaining, a significant milestone for the species. back at the prison greenhouse, susan christopher says she's learned some valuable lessons from the butterflies. >> when i watched the butterflies struggling to come out of their cocoon, it r