Ready, aim—shoot and kill a friend who's wearing a bullet-proof vest. Police say that very tragedy unfolded in Baltimore on Wednesday when Mark Ramiro, 30, shot Darnell Mitchell, 28, with a .22-caliber bullet, Reuters reports. A third friend apparently recorded Mitchell on video boasting that he was going to take a "deuce deuce in the chest" to test his bulletproof vest. But Ramiro aimed too high, the video ended, and Mitchell was later pronounced dead at a hospital. Ramiro now faces first- and second-degree murder along with two gun charges, the Baltimore Sun reports. Why first-degree? A veteran defense attorney told WBAL-TV that he questioned the charge, but added, "Premeditation—this computer (points toward the brain) works very rapidly. Premeditation can happen in a split, split second."