A C-130H taxis through the fog upon arrival at Eglin Air Force Base, Fla., Jan. 11. Air Force’s first fully upgraded C-130H is here for test and evaluation on its new modified propeller system and engines. (U.S. Air Force photo/Samuel King Jr.)Staff Sgt. Ethan Mulhern, 153rd Airlift Wing maintainer, places a cover over a C-130H engine intake after arriving at Eglin Air Force Base, Fla., Jan. 11. Air Force’s first fully upgraded C-130H is here for test and evaluation on its new modified propeller system and engines. (U.S. Air Force photo/Samuel King Jr.)A chunk of ice hangs from the bottom of the C-130H’s wing after its flight from Wyoming to Eglin Air Force Base, Fla., Jan. 11. Air Force’s first fully upgraded C-130H is here for test and evaluation on its new modified propeller system and engines. (U.S. Air Force photo/Samuel King Jr.)A C-130H taxis past the McKinley Climatic Lab after arriving at Eglin Air Force Base, Fla., Jan. 11. Air Force’s first fully upgraded C-130H is here for test and evaluation on its new modified propeller system and engines. (U.S. Air Force photo/Samuel King Jr.)A 153rd Airlift Wing maintainer places chocks on the wheels of a C-130H after arriving at Eglin Air Force Base, Fla., Jan. 11. Air Force’s first fully upgraded C-130H is here for test and evaluation on its new modified propeller system and engines. (U.S. Air Force photo/Samuel King Jr.)Maintainers from the 153rd Airlift Wing stand by after their C-130H arrived at Eglin Air Force Base, Fla., Jan. 11. Air Force’s first fully upgraded C-130H is here for test and evaluation on its new modified propeller system and engines. (U.S. Air Force photo/Samuel King Jr.)A 153rd Airlift Wing maintainer pulls a generator cable toward a C-130H after arriving at Eglin Air Force Base, Fla., Jan. 11. Air Force’s first fully upgraded C-130H is here for test and evaluation on its new modified propeller system and engines. (U.S. Air Force photo/Samuel King Jr.)A 153rd Airlift Wing maintainer plugs in a generator cable into her C-130H after arriving at Eglin Air Force Base, Fla., Jan. 11. Air Force’s first fully upgraded C-130H is here for test and evaluation on its new modified propeller system and engines. (U.S. Air Force photo/Samuel King Jr.)A 153rd Airlift Wing maintainer plugs in a generator cable into her C-130H after arriving at Eglin Air Force Base, Fla., Jan. 11. Air Force’s first fully upgraded C-130H is here for test and evaluation on its new modified propeller system and engines. (U.S. Air Force photo/Samuel King Jr.)