75 years after D-Day, the US Navy and Marines are still training for sea invasions, but now right...

When US Marines and sailors arrived in the Baltic region in June for this year's Baltic Operations exercise, they did so as national leaders came together in Western Europe for the 75th anniversary of the D-Day landings.

But the 47th iteration of BaltOps wasn't tailored to that anniversary, said Navy Lt. Cmdr. Rob Sellin and Marine Maj. Jeff Starr, two officers tasked with planning amphibious operations for BaltOps 2019, in a June interview.

When they started planning in February, they were aware of the timing, but the schedule was shaped by more immediate concerns. "This is the best weather time to be in this area of the world," Sellin said.