when he saved a corado springs doctor ininfghanistan. decion 2 2 coverage a nenaonal poll shows donald trump anhillary clton in t t adheadad into super esday. e cnn/orc lls shows trump withth9- percent of supportnong republicans. for the decrs, inton leads sanders by out 20-points. the new poll also shows, 70- percent of the people likely to earn thr party's prprprential nonas. the eve of supetuesday ... mpgngn volunteers for e sanders an clclton camps e in high gear. do nenechanne13's eric fink shows us wt it'sike behi the scene for those making the st-m-mute get-out-the vote pitches.0 nana i'm lily benjamin and i'm calling g th the bernie sders mpmn. e banking is colorado llstt lily benjaororer chce the nomination. i dot have a lot of moneneto dona, i want to susut him in every& y y i can.n.an needs to winin re. ppeded in foft cocoinin nd night to rally voters like benjamininhoho donanad 3 dolllls tohe mpaign. stanup t final hos are`grasoots politi a a a's core. acss towowat the phphphaking sure th'rterset to the caus. i've b bn foowin

i lost my sight ininfghanistan. if you're totally blind, you may also be ststggling with non-24. calling 844-844-2424. >>> finally tonight, our persons of the week. the conservationists behind the webcam capturing american eagle families around the country. today, it happened. the egg on the left cracking. the eaglet today, on the way out. the parents, nicknamed mr. president and the first lady. stay they started nesting about two years ago. >> they're kind of like a modern family in a lot of ways. take turns incubating the eggs, take turns going to fish and hu for food. >> today, we saw it. one eagle flyin back to the nest with the catch of the day. shared with eaeh other, and then we've seen this before, live webcams in pittsburgh, capturing the egg roro, keeping the temperature constant, 100 degrees. but back in washington, d.c., all eyes on the othej egg, still waiting for it to hatch. >> being able to see the love and caring that goeoe into catching and r rsing a baby. >>> i'm david muir. i hope to see you right back here on monday. until then, good nig. the bigger the burri

>> reporter: but sam, who outwitted and survived the taliban ininfghanistan, was not around to answer. he was suddenly, unexpectedly off the grid. >> the motive for the murder is still not known. >> samuel herr hasn't been seen. >> reporter: police have issued an all points bulletin for sam herr, a combat veteran suffering from flashback nightmares. the back of our minds. >> reporter: so you knew he knew how to use a weapon? >> correct. that's why the armed and dangerous comes inhere he's missing. and there's a possibility that he has weapons with hqm. you heard about him pointed to sam as being the guy. >> there's absolutely no way that it was not sam. >> reporter: back at the crime scene, her cell phone is constantly beeping with text messages. her taylor swift ringtone presence. her mother june is searching for the good daughter who never is out of touch. many times i text her. and, "are you still asleep or are you --" you know, "are you okay?" and no respond. and then i started to think, "what's going on?" >> reporter: when we come back, what the killer writes on her back that poi

springs doctor ininfghanistan.