Singapore ' s Black Knights Air Force make an exciting show over the sky in Bangkok , Thailand , 24 April 2008 . The performance held to mark the 25 th anniversary of relationship between the air forces of Thailand and Singapore . EPA / NARONG SANGNAK < 저작권자 ⓒ 2007 연 합 뉴 스 . 무단 전재 - 재 배포 금지 . >