So they just walked in, dropped the bombs off, and walked out. Very little exposure that way. They must have had a team in place though directing everything, as some freepers have suggested. Communicating on cell device ?
Good catch on the guy in the background.
Maybe wrong but the guy in this picture with the white hat is holding his left arm close to the same angle as the guy second from the left in the picture in post #508. Even the fingers in this picture of the guy leaving the scene look fake— who holds that fingers perfectly straight with their arm at that angle while running away? Prosthetic arm? Would be interesting— use a guy with a fake arm that appears real on all the video so police don’t consider your one armed suspect.