![Gas Turbine Technician 1ST Class Bruce Phillips monitors the four gas turbine engines from a central control station aboard the Spruance class destroyer USS NICHOLSON (DD-982). Country: Mediterranean Sea (MED Stock Photo - Gas Turbine Technician 1ST Class Bruce Phillips monitors the four gas turbine engines from a central control station aboard the Spruance class destroyer USS NICHOLSON (DD-982). Country: Mediterranean Sea (MED Stock Photo -](https://c8.alamy.com/comp/2M7RR3W/gas-turbine-technician-1st-class-bruce-phillips-monitors-the-four-gas-turbine-engines-from-a-central-control-station-aboard-the-spruance-class-destroyer-uss-nicholson-dd-982-country-mediterranean-sea-med-2M7RR3W.jpg)
Gas Turbine Technician 1ST Class Bruce Phillips monitors the four gas turbine engines from a central control station aboard the Spruance class destroyer USS NICHOLSON (DD-982). Country: Mediterranean Sea (MED Stock Photo -
![Petty Officer 1st Class Staci Allen (Right) slowly turns the crankshaft as Seaman Jacob Pruitt (Center) and Seaman Hannah Ybarra check the clearance inside the cylinder on a marine diesel engine. Sailors in the Diesel Shop at SERMC repair or replace ... Petty Officer 1st Class Staci Allen (Right) slowly turns the crankshaft as Seaman Jacob Pruitt (Center) and Seaman Hannah Ybarra check the clearance inside the cylinder on a marine diesel engine. Sailors in the Diesel Shop at SERMC repair or replace ...](https://l450v.alamy.com/450v/p339wj/petty-officer-1st-class-staci-allen-right-slowly-turns-the-crankshaft-as-seaman-jacob-pruitt-center-and-seaman-hannah-ybarra-check-the-clearance-inside-the-cylinder-on-a-marine-diesel-engine-sailors-in-the-diesel-shop-at-sermc-repair-or-replace-valves-pumps-compressors-and-control-devices-used-with-diesel-engines-p339wj.jpg)
Petty Officer 1st Class Staci Allen (Right) slowly turns the crankshaft as Seaman Jacob Pruitt (Center) and Seaman Hannah Ybarra check the clearance inside the cylinder on a marine diesel engine. Sailors in the Diesel Shop at SERMC repair or replace ...
![Airman 1st Class Taylor Mount, 23d Maintenance Squadron (MXS), aerospace propulsion apprentice, twists a wire on a Turbo-Fan (TF)-34 engine, May 16, 2018, at Moody Air Force Base, Ga. The 23d MXS Airman 1st Class Taylor Mount, 23d Maintenance Squadron (MXS), aerospace propulsion apprentice, twists a wire on a Turbo-Fan (TF)-34 engine, May 16, 2018, at Moody Air Force Base, Ga. The 23d MXS](https://c8.alamy.com/comp/PDF0N8/airman-1st-class-taylor-mount-23d-maintenance-squadron-mxs-aerospace-propulsion-apprentice-twists-a-wire-on-a-turbo-fan-tf-34-engine-may-16-2018-at-moody-air-force-base-ga-the-23d-mxs-propulsion-flights-mission-is-to-ensure-that-the-a-10c-thunderbolt-ii-tf-34-engine-is-in-satisfactory-condition-before-its-even-installed-on-the-aircraft-this-flight-is-responsible-for-the-overall-upkeep-and-maintenance-of-all-tf-34-engines-for-the-air-forces-largest-operational-a-10-fighter-group-PDF0N8.jpg)
Airman 1st Class Taylor Mount, 23d Maintenance Squadron (MXS), aerospace propulsion apprentice, twists a wire on a Turbo-Fan (TF)-34 engine, May 16, 2018, at Moody Air Force Base, Ga. The 23d MXS
![File:U.S. Army Sgt. 1st Class Clayton Perreira, a UH-60 Black Hawk crew chief, stands by as the helicopter's engines warms up at Hickam Air Force Base, Hawaii 130108-A-AO884-022.jpg - Wikimedia Commons File:U.S. Army Sgt. 1st Class Clayton Perreira, a UH-60 Black Hawk crew chief, stands by as the helicopter's engines warms up at Hickam Air Force Base, Hawaii 130108-A-AO884-022.jpg - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/9/99/U.S._Army_Sgt._1st_Class_Clayton_Perreira%2C_a_UH-60_Black_Hawk_crew_chief%2C_stands_by_as_the_helicopter%27s_engines_warms_up_at_Hickam_Air_Force_Base%2C_Hawaii_130108-A-AO884-022.jpg)
File:U.S. Army Sgt. 1st Class Clayton Perreira, a UH-60 Black Hawk crew chief, stands by as the helicopter's engines warms up at Hickam Air Force Base, Hawaii 130108-A-AO884-022.jpg - Wikimedia Commons
![GREAT LAKES, Ill. (Jan. 6, 2023) Machinery Repairman (MR) 1st Class Jonathan Nguyen, right, an MR "A" School instructor, supervises Fireman Shawntel Fragelus, a MR "A" School student, develops and practices metal GREAT LAKES, Ill. (Jan. 6, 2023) Machinery Repairman (MR) 1st Class Jonathan Nguyen, right, an MR "A" School instructor, supervises Fireman Shawntel Fragelus, a MR "A" School student, develops and practices metal](https://c8.alamy.com/comp/2NX4BG9/great-lakes-ill-jan-6-2023-machinery-repairman-mr-1st-class-jonathan-nguyen-right-an-mr-a-school-instructor-supervises-fireman-shawntel-fragelus-a-mr-a-school-student-develops-and-practices-metal-shaving-skill-while-using-a-lathe-during-a-lab-at-surface-warfare-engineering-school-command-great-lakes-swesc-gl-mrs-are-skilled-machine-tool-operators-who-make-replacement-parts-and-repair-or-overhaul-ships-engines-and-auxiliary-systems-they-also-work-on-deck-equipment-including-winches-and-hoists-condensers-and-heat-exchange-devices-swesc-gl-offers-the-navys-only-apprentice-2NX4BG9.jpg)
GREAT LAKES, Ill. (Jan. 6, 2023) Machinery Repairman (MR) 1st Class Jonathan Nguyen, right, an MR "A" School instructor, supervises Fireman Shawntel Fragelus, a MR "A" School student, develops and practices metal
![Airman 1st Class Richard Petersen, 103rd Maintenance Squadron aerospace propulsion technician, monitors a T56 engine run inside a T-10 Hush House at Bradley Air National Guard Base in East Granby, Connecticut, March 17, 2021. The new facility ... Airman 1st Class Richard Petersen, 103rd Maintenance Squadron aerospace propulsion technician, monitors a T56 engine run inside a T-10 Hush House at Bradley Air National Guard Base in East Granby, Connecticut, March 17, 2021. The new facility ...](https://l450v.alamy.com/450v/2gkd3nf/airman-1st-class-richard-petersen-103rd-maintenance-squadron-aerospace-propulsion-technician-monitors-a-t56-engine-run-inside-a-t-10-hush-house-at-bradley-air-national-guard-base-in-east-granby-connecticut-march-17-2021-the-new-facility-allows-the-aerospace-propulsion-shop-to-run-engines-in-a-noise-suppressing-environment-and-maximize-engine-maintenance-efficiency-for-the-103rd-airlift-wings-fleet-of-c-130h-hercules-aircraft-2gkd3nf.jpg)
Airman 1st Class Richard Petersen, 103rd Maintenance Squadron aerospace propulsion technician, monitors a T56 engine run inside a T-10 Hush House at Bradley Air National Guard Base in East Granby, Connecticut, March 17, 2021. The new facility ...
F-15E Strike Eagle engines tested for safety > 12th Air Force (Air Forces Southern) > Article Display
![Airman 1st Class Derek Mockalis, 103rd Maintenance Squadron aerospace propulsion technician, guides a propeller attached to a bridge crane during a C-130H Hercules propeller change at Bradley Air National Guard Base in Airman 1st Class Derek Mockalis, 103rd Maintenance Squadron aerospace propulsion technician, guides a propeller attached to a bridge crane during a C-130H Hercules propeller change at Bradley Air National Guard Base in](https://c8.alamy.com/comp/2GKXW89/airman-1st-class-derek-mockalis-103rd-maintenance-squadron-aerospace-propulsion-technician-guides-a-propeller-attached-to-a-bridge-crane-during-a-c-130h-hercules-propeller-change-at-bradley-air-national-guard-base-in-east-granby-connecticut-july-21-2021-aerospace-propulsion-airmen-test-maintain-and-repair-all-parts-of-the-engines-and-propellers-and-play-a-critical-role-in-maintaining-mission-readiness-for-the-103rd-airlift-wings-c-130h-hercules-fleet-2GKXW89.jpg)