A “blown switch” in a U.S. customs computer caused over 20,000 international travelers at LAX to get stranded on the tarmac, and inside the airport, for upwards of six hours on Sunday, MSNBC reports.

At one point, airlines were given clearance to get fuel and food, but many airlines didn’t take advantage of it, for whatever reason.

This is the third airport computer glitch of the summer causing massive delays. Maybe it’s about time to get those machines some new punchcards.

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