The E-9A is a twin turboprop used as a surveillance platform to ensure the Gulf of Mexico waters are clear of civilian boaters and aircraft during live missile launches and other hazardous military activities. The E-9A provides support for air-to-air weapons system evaluation, development and operational testing at Tyndall Air Force Base, Fla.

A militarized version of the Bombardier civilian Dash 8 commuter aircraft, the E-9 is a short- to medium-range turboprop that is frequently used in short-haul regional airline operations in its civilian capacity. With its short take off and landing capability, the E-9 is uniquely suited to its Air Force mission. Its capabilities are airborne ocean surface surveillance, telemetry recording and relay.  From: E-9 Widget | Military.com