♪ you're only young once. unless you have a subaru. (announcer) the subaru xv crosstrek. symmetrical all-wheel drive plus 34 mpg. love. it's what makes a subaru a subaru. welcome back to "weekends with alex witt." the breaking news the death toll rising after a massive earthquake shook nepal's capital of kathmandu. more than 1,000 are feared dead and numerous search efforts under way. the quake was centered in a densely populated area of the kathmandu valley. joining me now is shawn casey, emergency response team leader for the international medical corps. what do we know about casualties? what are you seeing?