1) They have been upgraded to Blk61The Block 60 was designed for the United Arab Emirates Air Force (UAEAF). It Based on the F-16C/D Block 50/52, A major difference from previous blocks is the Northrop Grumman AN/APG-80 Active electronically scanned array (AESA) radar. The Block 60's General Electric F110-GE-132 engine is a development of the −129 model and is rated at 32,500 lbf (144 kN). The Electronic Warfare system includes the Northrop Grumman Falcon Edge Integrated Electronic Warfare Suite RWR together with the AN/ALQ-165 Self-Protection Jammer. Falcon Edge, which was developed by Northrop Grumman specifically for the Block 60, is capable of showing not only the bearing of any threat but also the range.
The MIL-STD-1553 data bus is replaced by MIL-STD-1773 fiber-optic data bus which offers a 1,000 times increase in data-handling capability. Like the F-35, the Block 60 F-16 has a built in FLIR/laser targeting system rather than using a dedicated pod that would occupy a hardpoint, increase drag and RCS.
These were basically the first F-16s to use AESA radars way back before F-16V. They were the pinnacle of F-16 models until the V came out and are still pretty close to that series. UAE almost upgraded then further to “Block 61” models but instead is going for 5th gens now.