Combat-Helo: Operation Ouroboros is a simulation project featuring the U.S. Army's AH-64D Longbow attack helicopter. It was started in the early 2000s by Richard 'Flexman' Hawley as an unofficial sequel to Jane's Longbow 2. However, due to lack of time, interest and resources the project went on hold. As of 2009 the sim is back and rather than simply picking up where he left off, Flexman decided to start again from scratch using an all-new graphics engine and this time with more help and resources available, as well as a renewed interest in the project. The team's aim is to recreate Longbow 2 for today's graphics technology, and plan to implement the latest upgrades of the real-life Longbow.