170809-N-VO150-279 MAYPORT Fla. (Aug. 9, 2017) Sailors assigned to Amphibious Construction Battalion Two use an Improved Navy Lighterage System (INLS) power module to hip tow a flexed INLS power and intermediate module during Maritime Prepositioning Force Exercise 2017 (MPFEX17). MPFEX17 is a Naval Beach Group Two and 2nd Marine Expeditionary Brigade exercise that trains mission critical in-stream skills in support of the Maritime Prepositioning Force concept of operations for Bold Alligator 2017. (U.S. Navy photo by Mass Communication Specialist 3rd Class Kenneth Gardner/Released)