I think they quite genuinely thought we could be a terror threat. The massive heli that was escorting the other two circled our field twice, very low down, just above normal circuit height.(it had loads of antennae on it-could well have been guns or electronic counter-measures equipment). It was clearly checking the field and route out. It may be the route that dubyabush takes when he leaves. Here are the pics. Maybe they just wanted a closer look at the Capiche!