NBC should fire Brian Williams

NBC should fire Brian Williams for lying about being in a helicopter that was hit by a rpg. The news should be based on facts and to have a prime time reporter who makes a lot of money lie on national TV is a disgrace. We need to trust the people who are reporting the news to be truthful.
If Brian Williams has lied about this incident what other news reports has he lied about in the past? If NBC News doesn't fire Williams, then Williams should quit for it's not like he needs the money anyways.