Federal officials are testing the government’s ability to identify gyrocopters and other small aircraft over Washington, D.C., nearly three years after a Florida mailman flew undetected past the White House before landing his 350-pound rotorcraft at the U.S. Capitol.

The Air Force will fly a gyrocopter above the capital area at between 500 and 2,500 feet off the ground, and will fly Cessna and Sky Arrow aircraft between 500 and 8,000 feet above the ground, according to a Tuesday press release.