Gravity Industries jet suits are being deployed by paramedics for mountain rescues on Helvellyn, a 950-meter peak in England's Lake District, reducing response times from 1 hour 15 minutes on foot to just 3.5 minutes by air. The suits use arm-mounted jet engines to enable precise maneuvering over rugged terrain, though they cost $447,000-$600,000 per unit. This represents a breakthrough in emergency response technology that could save lives in remote mountain locations where every minute counts during medical emergencies.