The White House was briefly put on lockdown on Tuesday following reports of an airspace violation.
Fighter jets were scrambled after a small aircraft in the Washington area failed to communicate with federal air traffic controllers.
Officials later said the plane was not hostile.
The lockdown was lifted less than 30 minutes after it was first reported.


Man charged with 10 counts of attempted murder after knife attack on UK train
Tanzania's Hassan sworn into office after deadly election violence
Powerful 6.3 quake kills at least 20 in Afghanistan, hundreds injured
Turkey set to call for action on Gaza as soon as possible, source says
