car starts then dies on 2005 Lincoln LS

HI. The car was running great. I ran into to pick something up, came out. Car started flalessly and then the RPM's dropped and it died. Tried several times. No luck.

Asked by for the 2005 Lincoln LS
This could be several things, sounds like a fuel pump, but that is a pretty wild guess. I would get it to a shop while it is having the problem so they can diagnose it.
2 answers
mass airflow sensor