to answer that, we are joined by phillip carter is a former army officer who was a deputy assistant secretarydefense in the obama administration. he's now a senior fellow at the center for a new american security and adjunct professor of law at georgetown university. mr. carter, welcome. we just had an interview with a reporter on the scene in puerto rico. she said as the trump administration has been talking about, how much aid has been delivered to puerto rico, she said a lot of that is not getting out of san juan, it's having trouble getting into other parts of the island because they can't find truck drivers. is that something the military could have helped with? >> absolutely. puerto rico is a fairly large island, about 100 miles wide, 40 miles deep. it's got mountains that are almost 5,000 feet high and the population is not just in san juan but it's all over the island. it's another thing to get the supplies to people throughout the island that need it and military units have a unique capability to do that because they're used to pushing supplies in areas like this. >> reporter: what e

. >> reporter: months after conrad's death, a detective goes to king phillip high school, to have a talk with michelle cartere were talking, and then the phone like hung up and i didn't really think anything of it. >> reporter: didn't think anything of it, she tells the police, but that's not what she told her friends. a search of her phone reveals michelle sent a series of stunning text messages to a classmate, samantha boardman, after conrad's death. when michelle hears detectives are searching conrad's phone, she sends samantha a frantic message. >> sam, they read my messages with him. i'm done. his family will hate me and i could go to jail. >> reporter: but it gets worse. two months after conrad's death, michelle sends samantha this jaw-dropping admission. >> sam, his death is my fault. like honestly, i could have stopped him. i was on the phone with him and he got out of the car because it was working and he got scared and i told him to get back in. >> when he got out of the truck and said, "i can't do this. i'm not gonna do this," she said, "get back in the truck. suck it up." >> that is the saddest p