TAIPEI, TAIWAN - AUGUST 6:  Picture dated 02 October 1998 shows four types of Taiwan's second generation air force fleet, (from L to R), French-made Mirage 2000-5, locally-made IDF (Indigenous Defense Figher), E-2T early warning system and US-made F-16.  Taiwan's air force authorities have asked nationalist pilots to impose self-restraint to avoid clashing with Chinese jets over the Taiwan Strait amid cross-strait military tensions.    AFP PHOTO  (Photo credit should read JAMES HUANG/AFP via Getty Images)