A forward operating base (FOB) is any secured forward operational level military position, commonly a military base, that is used to support strategic goals and tactical objectives. A FOB may or may not contain an airfield, hospital, machine shop, or other logistical facilities. The base may be used for an extended period of time. FOBs are traditionally supported by main operating bases that are required to provide backup support to them. A FOB also improves reaction time to local areas as opposed to having all troops on the main operating base. Description In its most basic form, a FOB consists of a ring of barbed wire around a position with a fortified entry control point, or ECP. More advanced FOBs include an assembly of berms, concrete barriers, gates, watchtowers, bunkers and other force protection infrastructure. They are often built from Hesco bastions. FOBs will also have an Entry Control Point (ECP). An ECP is a controlled entry and exit point of the FOB and will typically have positions to protect personnel against Personnel Borne Improvised Explosive Devices (PBIED) and Vehicle Borne Improvised Explosive Devices (VBIED), along with blast mitigation with standoff protection. Bases in Iraq FOB Abu Ghraib FOB Al Asad FOB Caldwell FOB Carpenter FOB Courage FOB Danger FOB Falcon FOB Echo FOB Grizzly FOB Iskandariyah FOB Kalsu FOB Loyalty FOB Marez FOB MacKenzie FOB Q-West FOB Speicher FOB Haditha Dam Bases in Afghanistan FOBs in the United States Other reported Coalition installations in Afghanistan 2001–2016 See also Advance airfield Advanced Landing Ground Fire support base Forward Operating Site Loss of Strength Gradient Main Operating Base References External links Military installations of the United States