according to the justice department, more than a dozen packages were mailed, addressed to the white house, the fbi and various government installations. packages arriving at four military bases in the washington, d.c. area and the cia. at the army s ft. mcnair, a package forced the evacuation of a building. specialized teams finding it contained black powder in a vial, which could be used in explosives. also, a gps device and a fuse. all of the packages including a long, rambling letter, which said, in part, quote, president trump businessman, we want $250 million all you dead. and referred to synaptic frequency. long rambling letter, another indication that there may be a mental health component? of course. this is all about getting attention. this is about raising their sort of power level, basically, as, look at me. reporter: thanh cong phan was known to the secret service, according to sources, because he had sent letters to the white house. so, let s get to david