Notably absent from the aftermath of the 7.7-magnitude earthquake in the poor Southeast Asian nation Myanmar: the uniquely skilled, well-equipped and swift search-and-rescue teams and disaster-response crews from the United States.

At least 15 Asian and Western government rescue teams have landed crews reaching hundreds of workers in size, alongside initial pledges of financial aid reaching tens of millions of dollars, as the death toll of the March 28 quake tops 3,000, Myanmar’s government says. Cameras showed Vietnam’s team on arrival, marching square-shouldered to the rescue behind their country’s flag.