Stop aircraft from landing

A C-130 I assigned to do a round about around Utes with waypoints always ends up landing in the airport in the middle, even if I have waypoints saying to move across, then back to the otherside. It just tends to land.

How can I stop this? I'm using the C-130 as a paratroop transport if thats important.

Although, I DO want it to land when all hostiles present in an area are no more, how do I code a trigger to make the vehicle perform a landing when hostiles are not present anymore?