For those of you like me who have a 5 gallon can with flame shield from midwest can and want to use some type of transfer pump, here's a good video on removing it. The flame shield prevents you from reaching the bottom of the can.
I actually used the smallest screw driver I have and a set of locking needle nose pliers and regular needle nose pliers. I used the screw driver to allow me to pray the flame shield away from the can to get locking needle nose pliers on it (to prevent it from falling into the can) then used regular needle nose pliers to pull the flame shield out of the can.
Dan