Flight delays rippled across the East and Midwest on Tuesday following a glitch in the FAA computer system that tracks aircraft flight plans. The FAA reported that roughly 650 flights were affected, but delays were less severe than a summer thunderstorm event usually causes. Airports were reportedly operating on normal schedules as of Wednesday morning. The Air Transport Association is calling for a quick replacement of the decades-old system, which has experienced other problems in recent months. Republican presidential candidate Sen. John McCain, R-Ariz., said that the incident "once again highlights the need to reform and repair a broken system." Democratic presidential candidate Sen. Barack Obama, D-Ill., said "airline passengers are sick and tired of delays and cancellations."