Other research presented at the meeting suggests that most devices do not affect the implants in a significant way, even if they sometimes produce electromagnetic interference in a laboratory test.

CNN: Study: Headphones could interfere with pacemakers

Presumably, the USAF thinks that "the right thing" would involve pulling LightSquared's license, but for its part, the company says it believes Shelton is referring to a test conducted by Garmin (possibly explaining that recent outage in the Southeastern US?) using simulated interference filters -- not the actual filters that it has spent several million dollars developing and perfecting.

ENGADGET: US Air Force raises concerns over LightSquared's LTE network messing with GPS