File:US Navy 070829-F-8678B-061 Construction Mechanic 2nd Class Andrew W. Duchscher guides Equipment Operator 2nd Class Daniel L. Romero, moving the boom of a hydraulic crawler mounted rock drill, while drilling holes at Orote Point.jpg
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![File:US Navy 070829-F-8678B-061 Construction Mechanic 2nd Class Andrew W. Duchscher guides Equipment Operator 2nd Class Daniel L. Romero, moving the boom of a hydraulic crawler mounted rock drill, while drilling holes at Orote Point.jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/9/93/US_Navy_070829-F-8678B-061_Construction_Mechanic_2nd_Class_Andrew_W._Duchscher_guides_Equipment_Operator_2nd_Class_Daniel_L._Romero%2C_moving_the_boom_of_a_hydraulic_crawler_mounted_rock_drill%2C_while_drilling_holes_at_Orote_Point.jpg/800px-thumbnail.jpg?20091023100430)
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