Arlington Utility

 is part of the Metro system under the Capital Wasteland, but the metro part of the tunnel has collapsed. It is a underground utility tunnel and caves infested with Raiders and a few Mirelurks. It connects Arlington Cemetery North and the DCTA Tunnel 014-B Potomac tunnel system.

Notable Loot

 * U.S. Army: 30 Handy Flamethrower Recipes is found on the second floor in the "kitchen area". Coming from DCTA Tunnel 014-B Potomac, its past the caves, when you enter the tunnels again full of raiders. The first stairs on the right. Its on a shelf.