The inspector general’s investigation focuses on how information about the March 15 airstrikes on Houthi targets in Yemen was shared on the messaging app.
The incident, in which the pilots were safely recovered, marks the third time since December that an F/A-18 assigned to the carrier Truman has been lost.
It's a loss of aircraft worth more than $200 million in what is becoming the most dramatic cost to the Pentagon of the military campaign against the group.