American flags started disappearing from veterans' graves in Massachusetts, but it turns out the deed was not done by disrespectful humans, but groundhogs. The flags at Bellevue Cemetery, in Adams, were first reported missing earlier this month. When residents volunteered to replace the flags by hand, those also disappeared, causing police to investigate. Chief Richard Tarsa says officers found evidence that a groundhog is likely using the flags in its burrow. About 12 to 18 flags were damaged by the critter. Police say the plan to keep an eye on the cemetery.