As the U.S. Marine Corps shifts its focus to hot spots around the world, the ability to move quickly from ship to shore is receiving renewed attention.

Over the years, as Marines were fighting insurgents in Afghanistan and Iraq, protecting ground troops from roadside bombs became a priority, and heavily armored trucks known as Mine Resistant Ambush Protected vehicles became ubiquitous.

But as the U.S. military has reduced its involvement in those countries, the emphasis is shifting to supporting Marines in their ship-to-shore, or “amphibious,” role. Faster decision-making and enhanced interoperability with allied troops have also moved up on the priority list.

To support its multifaceted operations, the Marines are investing in a “highly unique menagerie of systems,” said Richard Aboulafia, vice president of analysis at the Teal Group, an aerospace and defense industry consulting firm. These systems include rotorcraft, fighter jets and ground vehicles that storm the beaches.