From Marines in the ranges of California to those in the skies of Japan, these are 20 of the most influential photos from around the Marine Corps during the month of October.
 
    
    
    
        
            Watch The Sunset
            Photo by Lance Cpl. Zachary Zephir
            U.S. Marines participate in ITX 1-21 at Marine Air Ground Combat Center Twentynine Palms, Calif., Oct. 5.
         
        
     
    
 
 
U.S. Marines participate in Integrated Training Exercise 1-21 at Marine Air Ground Combat Center Twentynine Palms, Calif., Oct. 5.
 
    
    
    
        
            Motorized Operation
            Photo by Lance Cpl. Zachary Zephir
            U.S. Marines live fire training at Motorized Operator Training during Integrated Training Exercise 1-21 at Marine Air Ground Combat Center Twentynine Palms, Calif., Oct. 6.
         
        
     
    
 
 
U.S. Marines perform live fire training at Motorized Operator Training at Marine Air Ground Combat Center Twentynine Palms, Calif., Oct. 6.
 
    
    
    
        
            Plug Your Ears
            Photo by Lance Cpl. Ujian Gosun
            U.S. Marines fire an M252A2 81mm mortar at a live-fire mortar displacement range at Combined Arms Training Center, Camp Fuji, Japan, Oct. 1.
         
        
     
    
 
 
U.S. Marines fire an M252A2 81mm mortar at a live-fire mortar displacement range at Combined Arms Training Center, Camp Fuji, Japan, Oct. 1.
 
    
    
    
        
            Night Flight
            Photo by Lance Cpl. Shannon Gibson
            A U.S. Marine Corps MV-22B Osprey participating in Weapons and Tactics Instructor course 1-21, refuels during a static forward arming and refueling point training exercise while utilizing the tactical aviation ground refueling system, at Holtville Airfield, Holtville, Calif., Oct. 5.
         
        
     
    
 
 
A U.S. Marine Corps MV-22B Osprey refuels during a static forward arming and refueling point training exercise, at Holtville Airfield, Holtville, Calif., Oct. 5.
 
    
    
    
        
            Feeding Friends
            Photo by Cpl. Rachel Young-Porter
            A U.S. Marine feeds a mule during an Animal Packer Course at the Marine Corps Mountain Warfare Training Center in Bridgeport, Calif., Oct. 8.
         
        
     
    
 
 
A U.S. Marine feeds a mule during an Animal Packer Course at the Marine Corps Mountain Warfare Training Center in Bridgeport, Calif., Oct. 8.
 
    
    
    
        
            Sky High
            Photo by Sgt. Brendan Custer
            A U.S. Marine Corps MV-22 Osprey approaches a U.S. Marine Corps KC-130 for fuel during air-to-air refueling mission over the U.S. Central Command Area of Responsibility on Oct. 3.
         
        
     
    
 
 
A U.S. Marine Corps MV-22 Osprey approaches a U.S. Marine Corps KC-130 for fuel during air-to-air refueling mission over the U.S. Central Command Area of Responsibility, Oct. 3.
 
    
    
    
        
            Sea bound
            Photo by Courtesy Photo
            The full United Kingdom Carrier Strike Group assembled at sea on Oct. 4.
         
        
     
    
 
 
The full United Kingdom Carrier Strike Group, led by Her Majesty's Ship Queen Elizabeth, assembled at sea, Oct. 4.
 
    
    
    
        
            The Rappel
            Photo by Lance Cpl. Dalton Payne
            U.S. Marines conduct special patrol insertion/extraction and helicopter rappel training at Camp Hansen, Okinawa, Japan, Oct. 23.
         
        
     
    
 
 
U.S. Marines conduct helicopter rappel training at Camp Hansen, Okinawa, Japan, Oct. 23.
 
    
    
    
        
            Prepare For Landing
            Photo by Courtesy Photo
            An U.S. Marine Corps MV-22 Osprey prepares for landing during a Marine Corps Combat Readiness Evaluation at Marine Corps Base Camp Pendleton, Calif., Oct. 20.
         
        
     
    
 
 
A U.S. Marine MV-22 Osprey prepares for landing during a Marine Corps Combat Readiness Evaluation at Marine Corps Base Camp Pendleton, Calif., Oct. 20.
 
    
    
    
        
            Out Of The Smoke
            Photo by Lance Cpl. Zachary Zephir
            A U.S. Marine conducts Advanced Motorized Operators Course at Marine Air Ground Combat Center Twentynine Palms, Calif., Oct. 23.
         
        
     
    
 
 
A U.S. Marine conducts Advanced Motorized Operators Course during Integrated Training Exercise 1-21 at Marine Air Ground Combat Center Twentynine Palms, Calif., Oct. 23.
 
    
    
    
        
            Safety Check
            Photo by 1st Lt. Zachary Bodner
            A Marine conducts pre-flight checks on an F-35B Lightning II Joint Strike Fighter aboard HMS Queen Elizabeth in the North Sea on Oct. 10.
         
        
     
    
 
 
U.S. Marines conduct pre-flight checks on an F-35B Lightning II Joint Strike Fighter aboard HMS Queen Elizabeth in the North Sea, Oct. 10.
 
    
    
    
        
            Establishing Comms
            Photo by Sgt. Sarah Stegall
            U.S. Marines establish communications from a light armored vehicle in preparation for a forward arming and refueling point operation at Marine Corps Base Camp Pendleton, Calif., Oct. 13.
         
        
     
    
 
 
U.S. Marines establish communications from a light armored vehicle in preparation for a forward arming and refueling point operation at Marine Corps Base Camp Pendleton, Calif., Oct. 13.
 
    
    
    
        
            Moving Forward
            Photo by Lance Cpl. Mackenzie Binion
            U.S. Sailors pilot Landing Craft, Air Cushion 6 while transporting Marines in support of a forward arming and refueling point operation, Oct. 12.
         
        
     
    
 
 
U.S. Sailors pilot Landing Craft, Air Cushion 6, while transporting Marines in support of a forward arming and refueling point operation, Oct. 12.
 
    
    
    
        
            Cold Fire
            Photo by Cpl. Seth Rosenberg
            A U.S. Marine fires an M4 carbine during a live-fire range at Eielson Air Force Base, Alaska, Oct. 17.
         
        
     
    
 
 
A U.S. Marine fires an M4 carbine during a live-fire range at Eielson Air Force Base, Alaska, Oct. 17.
 
    
    
    
        
            Beach Defense
            Photo by Cpl. Alize Sotelo
            A U.S. Marine targets an enemy amphibious vehicle during a beach defense exercise at Kin Blue Beach, Okinawa, Japan, Oct. 10.
         
        
     
    
 
 
A U.S. Marine targets an enemy amphibious vehicle during a beach defense exercise at Kin Blue Beach, Okinawa, Japan, Oct. 10.
 
    
    
    
        
            High Speed
            Photo by Lance Cpl. Brendan Mullin
            U.S. Marines maneuver an 11M naval special warfare rigid-hull inflatable boat through the ocean during a small boat training event, Oct. 24.
         
        
     
    
 
 
U.S. Marines maneuver an 11M naval special warfare rigid-hull inflatable boat through the ocean during a small boat training event, Oct. 24.
 
    
    
    
        
            Extinguish the Flame
            Photo by Cpl. Angelo Sagum
            Firefighters extinguish flames from a fire simulator during Exercise Active Shield aboard MCAS Iwakuni, Japan, Oct. 29.
         
        
     
    
 
 
Firefighters extinguish flames from a fire simulator during Exercise Active Shield aboard MCAS Iwakuni, Japan, Oct. 29.
 
    
    
    
        
            Cold As Ice
            Photo by Cpl. Seth Rosenberg
            A U.S. Marin holds security during a simulated raid as part of Exercise Red Flag-Alaska at Eielson Air Force Base, Alaska, Oct. 16.
         
        
     
    
 
 
A U.S. Marine holds security during a simulated raid as part of Exercise Red Flag-Alaska at Eielson Air Force Base, Alaska, Oct. 16.
 
    
    
    
        
            Helicopter Support
            Photo by Lance Cpl. Zachary Zephir
            U.S. Marines conduct helicopter support team training during Integrated Training Exercise 1-21 at Marine Air Ground Combat Center Twentynine Palms, Calif., Oct. 13.
         
        
     
    
 
 
U.S. Marines conduct helicopter support team training during Integrated Training Exercise 1-21 at Marine Air Ground Combat Center Twentynine Palms, Calif., Oct. 13.
 
    
    
    
        
            Live Fire
            Photo by Lance Cpl. Brienna Tuck
            A U.S. Marine fires a M27 Infantry Automatic Rifle during a live fire exercise aboard amphibious assault ship USS America (LHA 6), Oct. 3.
         
        
     
    
 
 
A U.S. Marine fires an M27 Infantry Automatic Rifle during a live fire exercise aboard amphibious assault ship USS America (LHA 6), Oct. 3.