A spokesman for Joint Base Andrews says an Air Force helicopter made an emergency landing at a middle school about eight miles south of the base.
Staff Sgt. Chad Strohmeyer says the helicopter landed shortly after 10 a.m. at Gwynn Park Middle School in Brandywine.
He says the helicopter's transmission warning light came on, and pilots are instructed to land immediately under those circumstances.
A pilot and co-pilot were the only people on board, and no one was injured.
The helicopter is known as a Huey and is used for medical transport. It was inspected and flew back to the base Monday afternoon.