Truck won't start after 1 trip on 2001 Ford Ranger

Went to the store(11am) and it started up fine, tried to start truck to go home and wouldn't start. It was only trip of the day. Thank you

Asked by for the 2001 Ford Ranger
Does the engine crank over and not start? How long was the drive to the store and how long was it sitting before trying to start the engine?
My apologies. I went back to store to get my truck that evening (10/22/09), turned the key, heard the fuel pump pressurize the system, and it started up. Today (10/23/09) I got in the truck at home, turned the key but did not hear the whirr of the fuel pump and the truck did not start
1 more answer
It could be any part of the starting/charging system. The place to start is the battery and go from there.