I work for an aero-medical service in New England and never leave for a mission without my SureFire E2D LED Defender®. One night, it may have just saved a man's life. We'd landed on an interstate after a severe car accident around 3:00 a.m. The state police secured the landing zone from traffic, but a bystander walked through the woods from his home to view the scene. As I exited the aircraft while it was running, the man ran toward the helicopter in close proximity to the low-spinning rotor blades. My E2D made the perfect strobe, flashing from five to 120 lumens to summon the police to intercept the bystander before he became another patient. After we debriefed the incident, other flight medics went out and bought SureFire flashlights. Now they won't leave the ground without theirs, either.