 The brigade 's Headquarters Company managed the engineer battalions but it also undertook its own missions , including humanitarian missions and public affairs assignments . It was supported by the brigade 's Special Troops Battalion which provided a wide range of duties for the Headquarters . The task of detecting and removing IEDs proved particularly difficult for the brigade , as IEDs were a serious issue for coalition forces and the leading cause of casualties at the time . The 54th Engineer Battalion under the 130th was specially tasked with counter @-@ <unk> operations on the over 300 kilometers of roads that the brigade was responsible for . The <unk> Engineer Battalion was charged with maintaining the power grid throughout Iraq . They were required to assess 200 power stations throughout the country and make repairs to each one individually . The 84th Engineer Battalion was tasked with most construction projects in the Forward Operating <unk> . These projects involved expansion of many of the larger <unk> as smaller ones were shut down and consolidated . One of the main focuses of the Battalion was the expansion of living quarters at Al <unk> Air Base . The <unk> Engineer Battalion was responsible for maintaining the supply yards housing building materials for the rest of the Brigade 's battalions , and to ensure that the materials were dispersed and used as efficiently as possible . The brigade 's mechanical and vehicle maintenance duties were provided by civilian contractors . These contractors also handled transportation of construction vehicles and vehicle parts to the theater . 
