Group 1 - A Taiwan Air Force F-16 fighter jet crashed into the sea during a training exercise on January 6, with the pilot reported missing after parachuting [1][6] - The Taiwan military publicly revealed the OTS-600 cold weather flight suit for F-16 pilots for the first time, which is expected to enhance survival time for pilots who eject into the sea [1][4] - The procurement of the cold weather flight suits was criticized as being delayed, with the defense department stating that they were only purchased last year despite the F-16's nearly 30 years of service [1][4] Group 2 - The crash of the F-16V fighter jet is the second incident since the aircraft's performance upgrade, with speculation surrounding the cause involving pilot navigation errors and equipment malfunctions [6] - Since the initial delivery of F-16A/B fighter jets to Taiwan in 1998, a total of 11 aircraft have been lost over the past 28 years [6]