dont be stupid la....how the US flip the killer switch? how the US communicate with the F-16? remote access via internet or satellite? if it is true that US can flip the switch and F-16s drop from sky...u think other countries will support their hardware... like how Pentagon keep telling its allies that there is no such thing as killer switch/backdoor in F-35s.

most likely US will not give support in term of software / hardware to Venezuela for them to continue to fly the planes... no new missiles/spare parts etc.... and all US hardware can recognize radar signature of Venezuela's F-16s and jam the radar...