“Finally, we have The Grim Reapers doing a difficult Christmas-time strike mission against an oil refinery. Things get hairy as the team tries to crack a series of very effective SAM batteries with AV-8 Harriers and Su-25Ts armed with anti-radiation missiles. It’s a tough mission but with a really great payout at the end. Check it out!” Thanks Stormbirds

Who are ESF? This explains.