Cities sue Defense Dept. over gun-check system failures

Investigators work at the scene of a deadly shooting at the First Baptist Church on Nov. 5 in Sutherland Springs, Texas. New York City, San Francisco and Philadelphia filed a federal lawsuit Tuesday against the Defense Department saying many service members who are disqualified from gun ownership weren’t reported to the national background check system. (Jay Janner/The San Antonio Express-News via AP, File)

NEW YORK — Three large U.S. cities filed a federal lawsuit Tuesday against the Department of Defense, arguing that many service members who are disqualified from gun ownership weren’t reported to the national background check system.