sentences:  On the other hand, USAF bombers like the B-52 and B-1 are not equipped with data links and cannot interoperate with either F-15s and F/A-18s.Furthermore, half the USAF A-10 and F-16 fighter force in the Air National Guard (ANG) are equipped with Situational Awareness Data Link (SADL) gear that cannot interoperate with Link 16 unless there is a "gateway" which has radios for both data links, and a computer system that can interconnect them and translate the data.While the deployment of data links to fighter aircraft has aided flights of aircraft to coordinate their attacks locally, these systems are constrained by line of sight and cannot reach command and control centers that are often hundreds, if not thousands, of miles distant from where the fighting is taking place.