I was spotting last month (19th may i think) here in Araxos, Greece to photography some F-16 and F4 doing some kind of exercice and I saw belgian F-16 taxiing and taking off with a strange weapon under the wing. I maybe have a picture that i took quite rapidly as i didn't expect F-16 to take off at that time, i'll post it later when i found it back !
After some research i found that belgian F-16 from there for the military operation in Libya. It was kind of a dark grey long tube with some stuff attached on top of it. Any idea of what that weapon could be ?