rehema ellis, nbc news, hopkinton, new hampshire. >>> that's "nbc nightly news" for this sunday.ter holt reporting from new york. for all of us here at nbc news, good night. >>> tonight a man is in the hospital after being hit while in a crosswalk. it's prompting questions about safety on san francisco streets. plus a house in mountainview went up in flames and good samaritans stepped up to help. we'll show you how, and more countries are called in to help search for that missing plane. >>> good evening, and thanks for joining us. i'm diane dwyer. terry mcsweeney is off tonight. a man in his 60s is inn critical condition tonight after being hit by a tour bus in san francisco. the accident happened at the intersection of seventh and mission. it comes amid growing concerns about pedestrian safety in the city, and