During Red Flag 2015-4, the Republic of Singapore Air Force participated with CH-47Ds helicopters and F-16C/D jet fighters. The F-16s operate normally from nearby Luke AFB, the reason the look like US Vipers. But this F-16D Block 52 (high spine) shows clearly the Singaporese roundel on the rear of the fuselage.
The last day of the airshow LIMA 2017 was brightened up with a beautiful Fokker 50UTA of the Republic of Singapore Air Force. The picture was made from the civil terminal, through the glass of the departure hall.