 Mess halls for the modern U.S. military are often contracted out to civilian firms, making KP duty less common today than it once was.In the U.S. Navy all sailors are assigned to 90 days of Temporary Assigned Duty (TAD) upon reporting to their respective commands.For most sailors this will mean being sent to a shore-based or shipboard galley, which includes, but is not limited to, washing dishes in the scullery, food prep, mess deck cleaning, and/or line server.