This of course has the challenge that you need a network, and if you're taking pictures in a hostile country such a network would be problematic. That said, there is an interesting fuzzing defense here.

Have the camera broadcast the image in parts with forward error correction to a set of passive listeners in innocuous gear distributed amongst the crew, perhaps an MP3 player, a vape stick, flashlight, a portable radio. Such that if enough of the listeners manage to get back across the border to home base they can be combined to recover the photos.