In pictures: Cobra Gold military exercise in Thailand

US Marines rest on top of amphibious assault vehicles during the joint Cobra Gold exercise in the coastal Thai province of Rayong. The drill is one of the Asia-Pacific region’s largest multinational military exercises that is held in Thailand every year. 29 nations are taking part in this edition.

US Marines disembark from amphibious assault vehicles during the joint Cobra Gold exercise in the coastal Thai province of Rayong. The event is a Thai-American initiative with an aim to improve coordination between the armed forces.

A tank takes part in the Amphibious Assault Demonstration during the Cobra Gold multilateral military exercise in Hat Yao Beach, Sattahip District, Chonburi Province, Thailand

Soldiers take part in the Amphibious Assault Demonstration during the Cobra Gold multilateral military exercise in Hat Yao Beach, Sattahip District, Chonburi Province, Thailand

Soldiers take part in the Amphibious Assault Demonstration during the Cobra Gold multilateral military exercise on Hat Yao Beach, Sattahip District, Chonburi Province, Thailand

Tanks take part in the Amphibious Assault Demonstration during the Cobra Gold multilateral military exercise in Hat Yao Beach, Sattahip District, Chonburi Province, Thailand

A soldier takes part in the Amphibious Assault Demonstration during the Cobra Gold multilateral military exercise in Hat Yao Beach, Sattahip District, Chonburi Province, Thailand

Soldiers land with an amphibious assault vehicle and secure the beach head during the joint military exercise titled "Cobra Gold" on Hat Yao beach in Chonburi province, eastern Thailand

A US soldier aims his gun during the ongoing joint military exercise titled "Cobra Gold" on Hat Yao beach in Chonburi province, eastern Thailand

Soldiers takes part in an ongoing joint military exercise titled "Cobra Gold" on Hat Yao beach in Chonburi province, eastern Thailand

A soldier takes part in the Amphibious Assault Demonstration during the Cobra Gold multilateral military exercise in Hat Yao Beach, Sattahip District, Chonburi Province, Thailand

Soldiers take part in the Amphibious Assault Demonstration during the Cobra Gold multilateral military exercise in Hat Yao Beach, Sattahip District, Chonburi Province, Thailand

Soldiers take part in the Amphibious Assault Demonstration during the Cobra Gold multilateral military exercise in Hat Yao Beach, Sattahip District, Chonburi Province, Thailand

A soldier takes part in the Amphibious Assault Demonstration during the Cobra Gold multilateral military exercise in Hat Yao Beach, Sattahip District, Chonburi Province, Thailand

A fighter jet takes part in the Amphibious Assault Demonstration during the Cobra Gold multilateral military exercise in Hat Yao Beach, Sattahip District, Chonburi Province, Thailand

US soldiers land with an amphibious assault vehicle and secure the beach head during the joint military exercise titled "Cobra Gold" on Hat Yao beach in Chonburi province, eastern Thailand

Soldiers take part in the Amphibious Assault Demonstration during the Cobra Gold multilateral military exercise on Hat Yao Beach, Sattahip District, Chonburi Province, Thailand

A US Marine pretends to require medical assistance during the joint Cobra Gold exercise in the coastal Thai province of Rayong

Soldiers take part in the Amphibious Assault Demonstration during the Cobra Gold multilateral military exercise in Hat Yao Beach, Sattahip District, Chonburi Province, Thailand

Soldiers land with an amphibious assault vehicle and secure the beach head during the joint military exercise titled "Cobra Gold" on Hat Yao beach in Chonburi province, eastern Thailand

Tanks take part in the Amphibious Assault Demonstration during the Cobra Gold multilateral military exercise in Hat Yao Beach, Sattahip District, Chonburi Province, Thailand