SEATTLE- Two Alaska Airlines (AS) planes collided while preparing for take-off at Seattle-Tacoma International Airport (SEA), causing passengers to disembark and return to the gate. The incident involved a minor wingtip contact between a Boeing 737-800 and a 737-900, both scheduled for California destinations. According to Alaska Airlines, ground-service tugs were maneuvering both jets when the aircraft wings made contact. Both jets were en route to California—one to Orange County John Wayne Airport (SNA) and the other to Sacramento International Airport (SMF). While the incident did not result in any injuries, standard safety protocols required both aircraft to return to their gates. Passengers were promptly deplaned and later rebooked on alternate flights.