david pierre and his wife went into labor and rushed to the hospital.texted his brother to see how his wife was doing. >> it turns out that nicholas and his wife were already there. both babies were early. one by a day. the other by nine days. coincidentally, the doctor delivered babies for a set of sisters earlier in the week. >> should be a lot of fun on their birthday parties. you know? barbecues. going to be a blast. >> yeah. >> they're going to have a bond that is closer to brothers than cousin. i'm sure they'll grow up together. very cool. >> convenient to do the hospital visit. basically down the hall from each other. imagine if aunts, uncles, come, walk there, there. get the whole thing done. >> take one bouquet of flowers. let's take a picture. look what i bought you. >> good, diana. >> coming up, the polygamist sect getting focus, and details about who is really still in charge. >> later how the cell phone changed the way the world communicates. can you believe the first wireless call was 40 years ago this week? we'll take a trip to the abc va

david pierre's wife went into labor and was rushed to the hospital. it turns out that nicholas herrera and his wife were already there. both babies were early. one by a day. the other by nine days. coincidentally, the doctor delivered babies for a set of sisters earlier in the week. >> should be a lot of fun on their birthday parties. you know? barbecues. going to be a blast. >> yeah. they're probably going to have a bond that's closer to brothers than to cousins because i'm sure they're going to grow up together. that's very cool. >> convenient to do the hospital visit. basically down the hall from each other. imagine if the aunts and uncles have to come, just walk right there and there, get the whole thing done. >> take one bouquet of flowers. let's take a picture. look what i bought you. >> good, diana. >> coming up, the polygamist sect getting focus, and details about who is really still in charge. >> later how the cell phone changed the way the world communicates. can you believe the first wireless call was 40 years ago this week? we'll take a tr

. >> okay, pierre, thanks very much. i want to go to david now another eyewitness who was there when the explosions took place a little before 3:00 this afternoon. david, thank you for joining us. what did you see? >> not too much actually. i just saw the smoke and heard the explosions pretty much is what i saw. >> how far away were you? >> well, i had just crossed the finish line of the marathon and maybe about two or three minutes after i had crossed a woman was handing me gatorade and that's when i heard the first explosion, turned around, saw the smoke and heard the other explosion. >> so you were actually running in the marathon and as you said you just crossed the finish line. could you tell how far these explosions were from the finish line? and what could you feel from where you were? >> i couldn't really tell exactly how far it was. i don't know, maybe a mile, maybe 700 -- i don't know, 600 or 800 meters, something like that probably. and, i don't know, i just saw everybody was panicking and going around. all the aides, the marathon

david? >> john schriffen leadings off in texas tonight. john, thank you. i want to bring in abc senior justice correspondent pierre thomas, who has been working this case on this easter sunday. and pierre, first, you had this assistant d.a. targeted, now the d.a. and his wife both murdered. they have got to be worried about some sort of bigger plan here. >> reporter: david, they really are. this is unprecedented. you have two men working in the same office, it was only weeks ago that the lead prosecutor was vowing to find out who killed one of his principle deputies. now, he's dead. so, law enforcement officials including the fbi, u.s. marshals and atf are down there, trying to assist police in this unfolding mystery. >> and of course, there's the other question about the prison chief in colorado who was also targeted and whether or not all three cases could be linked. >> reporter: well, they're looking at everything. no stone is going to be left unturned. in fact, you'll recall that there was a shootout a couple days after that prison chief was killed in texas. and they're now looking to see if there's any kind o

. >> did you talk to wayne l affirmative pierre or david camp?lled the bureau of tobacco, firearms thugs. it so pushed him, george bush resigned at the same time. same guy. >> that's this kind of incendiary language, he insulted federal workers, law enforcement officials. this kind of behavior, they don't remind you of that. >> this is the same guy. >> that's where i thought you were going to go. this is the same guy who supported universal background checks as recently, i think, as 2009. so, maybe that's before the gun manufacturers started pumping in more money. >> i think if you look at the word hypocracy, you might see his picture. we talked about this before the gun lobby has been raking up thebucks. gun sales have skyrocketed. they went from $19,000,000,000 in revenue, i think, in '09 to something like $31,000,000,000 in 2012. barack obama has been called jokingly by some industry as the gun salesman of the year because he is so good for business. the new york time sells it's predominantly to people who have a lot of guns. they are buying m

. >> okay, pierre, thanks very much. i want to go to david now another eyewitness who was there when the explosions took place a little before 3:00 this afternoon. david, thank you for joining us. what did you see? >> not too much actually. i just saw the smoke and heard the explosions pretty much is what i saw. >> how far away were you? >> well, i had just crossed the finish line of the marathon and maybe about two or three minutes after i had crossed a woman was handing me gatorade and that's when i heard the first explosion, turned around, saw the smoke and heard the other explosion. >> so you were actually running in the marathon and as you said you just crossed the finish line. could you tell how far these explosions were from the finish line? and what could you feel from where you were? >> i couldn't really tell exactly how far it was. i don't know, maybe a mile, maybe 700 -- i don't know, 600 or 800 meters, something like that probably. and, i don't know, i just saw everybody was panicking and going around. all the aides, the marathon