Testing Sources News Today

Herridge in washington, d.c.. >> reporter: thank you sean. based on the initial testing sources tell fox they believe the devices contain semtex, petn is the explosive we saw in the underwear bomb last december that failed. the president telling reporters earlier today the two devices were the real deal. >> the president: initial examination of those packages has determined that they do apparently contain explosive material. >> reporter: u.s. counter terrorism officials confirmed that a tip warn...