Ukrainian pilot Oleksiy 'Moonfish' Mes was killed when an F-16 fighter jet crashed during operations to intercept the largest Russian aerial assault on Ukraine to date. Mes, one of the first Ukrainian pilots trained on the F-16, had previously lobbied for the aircraft's supply from Western allies and was instrumental in its combat debut, successfully downing three cruise missiles and a drone before his death. The crash, occurring amid a massive Russian missile and drone attack, is under investigation with no current evidence of pilot error or mechanical failure. The Ukrainian military confirmed that the F-16s played a crucial role in defending against the attack, which saw over 200 projectiles launched at Ukraine. This incident highlights the ongoing challenges faced by Ukraine in its defense efforts and the significant loss of experienced pilots. Ukrainian officials have called for lifting restrictions on the use of Western weaponry to enhance their capabilities against Russian aggression.