philadelphia, we're told cranes have now arrived on site and are preparing for a lift. we'll, of course keep an eye on the scene and bring an update in just a few moments. those images are striking. i can't get those out of my head. my goodness. you think about how much those cars, in fact weigh. all right, now to our other top story in nepal, where search efforts are ongoing for a missing u.s. marine helicopter carrying six americans and two nepalese soldiers. the chopper, similar to the one seen here was on a relief mission, when around 7:00 p.m. nepal time it suddenly lost all communication with the ground. there was reportedly brief radio contact about a fuel issue before communication went down. the helicopter was delivering relief supplies near the village of charikot after a second major earthquake hit nepal. it's just weeks after that massive quake there that killed 8,000. here's nbc's chief foreign correspondent richard engel with more. >> reporter: the earth moved