Some of 2nd Recon Bn’s Amphibious Reconnaissance Marines doing their Amphib thing. Bold Alligator is a multinational exercise hosted by the US, concentrating on littoral warfare. Started in 2011, it has been held annually ever since, and involves as many as eleven allied countries conducting combined-arms littoral operations at Camp Lejeune, NC and Virginia.
This was likely done expressly for the cameras since it’s in broad daylight. Ordinarily, the Recon bubbas will be going ashore under cover of darkness.