Petty Officer 1st Class Aaron Nagel observes as Petty Officer 2nd Class Casey Rider checks the consistency of the drilling mud, a mixture used as a lubricant and a coolant, while it removing cuttings during drilling, in Shaba, Kenya, April 22. The Seabees assigned to Naval Mobile Construction Battalion 74 plan on drilling three water wells for villagers in the district of Garissa during their six-month deployment to Combined Joint Task Force-Horn of Africa.