N.O.E is the worst and you need to complete it to continue whit the story and all you have to is fly a plane but there's also a radar that sends rockets if it detects you and the only way to stay undeteced is by flying low wich is a problem since you fly into evrything and once you completed you have to go back to the airport and the problem is you have to make a U-Turn so the damn radar detects u so u have to fly low and bump into thetrees and fail the mission and all of that with the awfull flying controls of SA