Here is a photo of a standard PSA Airlines Bombardier CRJ700 series regional jet ... seated troops in combat," according to Lockheed Martin, the weapons company that builds the helicopter.

The aircraft that collided in the tragic incident were a Bombardier CRJ700 jet operated as American ... maximum gross weight of 22,000 pounds, Lockheed Martin said on its website.

There were 60 passengers and four crew members on the jet, a Bombardier CRJ-700, officials said ... a subsidiary of defense contractor Lockheed Martin. The aircraft involved in Wednesday ...

Here are images of the two aircraft involved in the crash, taken from airline websites and directly manufacturers.

The twin-engine, four-blade helicopter is manufactured by Sikorsky, a subsidiary of defense contractor Lockheed ... in May 1999.Bombardier said in 2015 that the CRJ700 series accounted for 20% ...