The search for missing Malaysian jetliner MH370 continues 10 days after it vanished. Authorities said experts are investigating the flight simulator that pilot Zaharie Ahmad Shah kept at his home. What does a flight simulator actually do? How does it work, and why is it now a part of the investigation?
Starting at 1:20 p.m. ET, NBC News' Lester Holt (@LesterHoltNBC) will sit down with NBC News analyst Bob Hager to moderate a live Q&A and walk viewers through a flight simulator.