Using 1 of 3 methods playing as the independent uav operator (Strider, Darter, Ababil) create a laser target.
Switch to the flying Buzzard. At this point you will not be able to lock onto any of the laser targets displayed on your radar (they appear as grey squares.)
Switch to the blufor uav operator and create a laser target using 1 of 2 methods (Greyhawk or Darter).
Switch back to the flying Buzzard and you will now be able to lock onto those targets.