<Li> The Thin Orange Line - Her Majesty's Coastguard </Li> <Li> The Thin Yellow Line - Highways England Traffic Officer Service </Li> <P> United States of America: </P> <Ul> <Li> The Thin Orange Line--Search and Rescue Personnel, sometimes used by civilians possessing a concealed carry weapon permit </Li> <Li> The Thin Red Line - firefighters </Li> <Li> The Thin Grey Line Fugitive Recovery Agents, Bail Bonds Officers, Bounty Hunters </Li> <Li> The Thin Silver Line--Corrections officers </Li> <Li> The Thin Yellow Line--Tow Truck Drivers, The Old Line for Loss Prevention Officers, Security Officers </Li> <Li> The Thin Green Line - Military, Park Rangers, US Border Patrol, and Environment Services Personnel </Li> <Li> The Thin Gold Line--Dispatcher </Li> <Li> The Thin White Line--Emergency medical services . The thin white line differs from other thin lines in that the background is blue instead of black, with a white line crossing horizontally through the middle . EMS also still uses the "Thin Orange Line" which is primarily used by Search and Rescue . </Li> <Li> The Thin Black Line--Nurses . The thin black line differs from other thin lines because it is a white background with a horizontal black line through the middle . </Li> </Ul>

American flag with blue line in the middle