Sonic boom updates: 4 likely dead after F-16s investigate unresponsive plane

D.C. Air National Guard F-16s were scrambled on Sunday from Maryland -- causing a sonic boom heard throughout large portions of Washington, D.C., and the surrounding area -- to investigate what the North American Aerospace Defense Command called an “unresponsive“ Cessna business jet that had entered a restricted area over the nation’s capital and ultimately crashed into a forest area of southwest Virginia. MORE: