I just remembered what Doug said on the subject:
The Rescue Laser™ is the most effective nighttime and adverse weather visual signaling device. It is conspicuous and abnormal enough that it will be reported by passing aircraft, unlike a strobe in most cases. Compared to the best strobe lights . . . the Rescue Laser™ has 10 times the range and effectiveness. . . .
Jeanette Isabelle
Is it generally legal to use? I thought flashing a plane with a laser would land you in Gitmo. Maybe an exception for emergency use?