On March 11, 2011, a massive earthquake and tsunami hit Japan. At 12:33 pm EST President Obama announced an aircraft carrier was en route.

— Brian Schatz (@brianschatz) September 27, 2017

By March 23 the US had 20 ships, 140 aircraft and 19,000 sailors and marines supporting the relief effort.

— Brian Schatz (@brianschatz) September 27, 2017