Here's the design spec for the dropship. In this film, I felt that dropship needed a backstory in the same way any other character in the film needs one. Most of the guidelines tend to be focused on the functional use of the ship...
The dropship is an advanced police-military personnel carrier. It carries up to 6 troops and 2 pilots, and is designed to land in tight urban areas such as on streets between buildings on city blocks. The ship has a high vertical wing that makes the overall ship resemble a shark's dorsal fin. The ship is capable of horizontal flight and vertical take-offs and landings. The sides and belly of the ship have flashing police lights and landing lights to illuminate troop deployment. The deployment door is located in the rear and resembles the back of a U-Haul Truck in its rectangular shape. On both sides of the ship are hatches where equipment can be easily accessed. The Division number is painted on the outside of the ship's dark body. It can have some type of color scheme, but is overall dark for night missions. The ship has some type of propulsion boosters that can pivot for vertical landings and flying. The ship is heavily weathered to show it's wear and tear. It's been through a lot of missions and has it's share of battle scars (shrapnel and bullets). the paint is chipped and faded. the ship has some light weaponry located on the wings or under the belly of the ship for covering fire when necessary, but it is primarily a personnel carrier. The ship uses landing legs rather than wheels or skids. The ship has some light protective armor particularly around the propulsion boosters for protection. On top of the ship's hull are sirens and a variety of antenna for communications. The pilot and co pilot can be seen from the front of the ship.