Truck wont start!!

[Boostwizzard]

all was fine last night, parked it, this morning all it does is crank over and nothing more? not even a stumble or miss, nothing!!! anyone have this happen before? i checked the fuel kill switch and it look ok, the only other thing i can think off (which happened to me many years ago on a cummins) is the air kill solenoid got stuck shut, but dont know if the 6.0 work the same way. its a 2004 F250 6.0, any advise is golden!