Seven years ago today, on April 22, 2004, Pat Tillman was killed by friendly fire in Afghanistan.

It was around this time last year when a bunch of soldiers in Afghanistan stormed the web with their of version Lady Gaga's "Telephone?" Is there something about late April that inspires American soldiers serving in Afghanistan to channel their inner pop star, because now a bunch of Marines have unleashed a video of themselves preening around in front of a camera -- dancing and lip-syncing to Britney Spears' "Hold It Against Me.