You do not need to spawn as a helicopter crew to pilot a helicopter, but you DO need to spawn as a demo expert or engineer to be able to disarm mines. You may also select JTACs to practice using laser designators for your friends' CAS strikes, UAV operators to practice with UAVs/UGVs, and more. The mission has every class of character that has any special skill (such as engineers to remove mines, medics for heals, engineer divers, etc) as well as vehicle-specific armor and helicopter crews and fixed wing pilots.
Spawn into the mission as one of several classes. This combines everything from those ranges and adds the same bullet trajectory trace to every weapon in the game, every vehicle in the game, as well as several other functionalities for players to train on other than finding out the hard way mid-mission.
This is a culmination of several smaller projects I was working on with my VR training ranges.