The CIA left explosive material inside the engine compartment of a Loudoun County school bus. The bus was used during a training exercise for bomb sniffing dogs. The CIA said that the explosives weren’t dangerous, as it was a putty, or plastic explosive similar to C4, and needs a special detonator.
The explosive device made it past daily driver inspection due to its intended inconspicuousness and was in the bus for two days of ferrying students before being discovered during routine maintenance.
While it was apparently safe for students, it is still an absurd oversight that should never happen. Military grade explosives were on a school bus for two days! Good try, good effort CIA.
The program did say they would use better inventory control procedures for the program. Which, duh.