Militaries are also known for being reluctant to take chances. Even the world's most active militaries are known to occasionally rely on old technologies for reasons of reliability and security. "One thing I've seen in places like Ukraine is the use of paper maps, or laminated maps, and compasses," says Thomas Withington, associate fellow at the Royal United Services Institute, a think tank. "You can't jam that." It's a kind of "analogue resilience", he adds.