Open the map, open the radial menu on your target and pick Fire Support:

Artillery: Mortar HE (6 rounds), Mortar barrage (18 rounds), Smoke screen, Illumination, Rocket strike (16 rockets)
Air support: Attack helicopter (orbits the target and fires rockets at hostiles within 350 m for 3 minutes), Attack helicopter: RTB
Transport: MEDEVAC (lands, loads wounded within 50 m, treats them aboard), Extraction (lands, waits for your group, flies you to your drop-off), Set drop-off point here, Helicopter: take off now

Radio traffic in English with call signs (Crossroad, Reaper 1-1, Dustoff 1-1, Ferry 2-1).
US/FIA use UH-1H and 81 mm / Hydra, USSR uses Mi-8 and 82 mm / S-5.
Vanilla only, no dependencies.

Fire Support

1.0.1

1.0.0