"sfb" wrote in message news:r6Pxf.9$MG1.6@trnddc05...
Maybe IFR from their base to the border, but when doing surveillance of
the border, the UAV will often loiter in an area which presents a
challenge to maintaining IFR separation.


ATC provides IFR seperation to aircraft all over the world. Why is our
boarder with Mexico so difficult?