Last week, the NTSB held three days of hearings looking into what led up to the fatal crash between a plane and a helicopter in January.

March 13: Sen. Moran and Sen. Ted Cruz (R-Texas) press the Army to answer questions regarding the Army’s role in the midair collision on January 29th. March 27: The Senate Commerce Subcommittee on Aviation holds a hearing on the January 29 midair collision.

The National Transportation Safety Board questioned witnesses Friday on collision avoidance technology and organizational systems to manage risk. It is the third and final day of investigative hearings probing January’s midair collision between a US Army Black Hawk helicopter and an American Airlines regional jet,