Naval Mobile Construction Battalion 4

110917-N-LL945-282 AFGHANISTAN (Sep. 17, 2011) Seabees from Naval Mobile Construction Battalion (NMCB) FOUR's Alfa and Delta companies place prefabricated concrete pieces in the riverbed at the Musa Qal'eh low water crossing project. NMCB FOUR is a component of the Naval Expeditionary Combat Command that provides contingency engineering and construction across Afghanistan in support of the overall mission of International Security Assistance Forces and regional combat commander requirements.

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110917-N-LL945-269 AFGHANISTAN (Sep. 17, 2011) Construction Mechanic 3rd Class Daniel Thelen of Naval Mobile Construction Battalion (NMCB) FOUR guides the excavation of the riverbed for the placement of the next section of toe-wall at the Musa Qal'eh low water crossing project. NMCB FOUR is a component of the Naval Expeditionary Combat Command that provides contingency engineering and construction across Afghanistan in support of the overall mission of International Security Assistance Forces and regional combat commander requirements.

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110917-N-LL945-243 AFGHANISTAN (Sep. 17, 2011) Steelworker 3rd Class Thomas Cunningham of Naval Mobile Construction Battalion (NMCB) FOUR welds a spreader bar to the toe-wall at the Musa Qal'eh low water crossing project. NMCB FOUR is a component of the Naval Expeditionary Combat Command that provides contingency engineering and construction across Afghanistan in support of the overall mission of International Security Assistance Forces and regional combat commander requirements.

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110917-N-LL945-186 AFGHANISTAN (Sep. 17, 2011) Chief Hospital Corpsman Julio Ortiz and Builder 3rd Class Vincent Decaro of Naval Mobile Construction Battalion (NMCB) FOUR interact with some local children at the Musa Qal'eh low water crossing project. NMCB FOUR is a component of the Naval Expeditionary Combat Command that provides contingency engineering and construction across Afghanistan in support of the overall mission of International Security Assistance Forces and regional combat commander requirements.

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110917-N-LL945-033 AFGHANISTAN (Sep. 17, 2011) Constructionman Steelworker Brittany Desroches of Naval Mobile Construction Battalion (NMCB) FOUR welds a metal plate across a joint between concrete components at the Musa Qal'eh low water crossing project. NMCB FOUR is a component of the Naval Expeditionary Combat Command that provides contingency engineering and construction across Afghanistan in support of the overall mission of International Security Assistance Forces and regional combat commander requirements.

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110814-N-LL945-203 PATROL BASE ALCATRAZ, AFGHANISTAN (Aug. 14, 2011) Tower Leader and Driller, Utilitiesman 2nd Class Luis Esparza of Naval Mobile Construction Battalion (NMCB) FOUR monitors the operation of the drilling rig from the driller station on the rig at the water well site on Patrol Base Alcatraz in southwestern Afghanistan. NMCB FOUR is a component of the Naval Expeditionary Combat Command that provides contingency engineering and construction across Afghanistan in support of the overall mission of International Security Assistance Forces and regional combat commander requirements.

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110814-N-LL945-180 PATROL BASE ALCATRAZ, AFGHANISTAN (Aug. 14, 2011) Construction Mechanic 3rd Class Susanne Salerno of Naval Mobile Construction Battalion (NMCB) FOUR performs a filter cake test in the mud lab at the water well site where the mud is constantly monitored for viscosity, sand content and acidity, the mud program is essential to water well drilling as the mud is pumped down the drill shaft to cool the drill bit, carry away cuttings and seal the well shaft. NMCB FOUR is a component of the Naval Expeditionary Combat Command that provides contingency engineering and construction across Afghanistan in support of the overall mission of International Security Assistance Forces and regional combat commander requirements.

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110814-N-LL945-118 PATROL BASE ALCATRAZ, AFGHANISTAN (Aug. 14, 2011) Construction Mechanic Constructionman Tomas Gonzalez and Construction Mechanic 1st Class Travis Allison of Naval Mobile Construction Battalion (NMCB) FOUR disassemble the malfunctioning mud pump on the drilling rig, the pump is necessary for pumping mud down the drill shaft to cool the drill bit, carry away cuttings and seal the well shaft. NMCB FOUR is a component of the Naval Expeditionary Combat Command that provides contingency engineering and construction across Afghanistan in support of the overall mission of International Security Assistance Forces and regional combat commander requirements.

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110814-N-LL945-059 PATROL BASE ALCATRAZ, AFGHANISTAN (Aug. 14, 2011) Construction Electrician 3rd Class Eric Polito and Construction Mechanic Constructionman Tomas Gonzalez of Naval Mobile Construction Battalion (NMCB) FOUR position a new section of drill steel on the drilling rig after having replaced the worn out drill bit (foreground) at the water well site on Patrol Base Alcatraz in southwestern Afghanistan. NMCB FOUR is a component of the Naval Expeditionary Combat Command that provides contingency engineering and construction across Afghanistan in support of the overall mission of International Security Assistance Forces and regional combat commander requirements.

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110814-N-LL945-033 PATROL BASE ALCATRAZ, AFGHANISTAN (Aug. 14, 2011) Construction Electrician 3rd Class Eric Polito of Naval Mobile Construction Battalion (NMCB) FOUR helps guide a new section of drill steel up to the Derrick Handler, Construction Mechanic Constructionman Tomas Gonzalez on the drilling rig at the water well site on Patrol Base Alcatraz in southwestern Afghanistan. NMCB FOUR is a component of the Naval Expeditionary Combat Command that provides contingency engineering and construction across Afghanistan in support of the overall mission of International Security Assistance Forces and regional combat commander requirements.

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