M&V--
You may be surprised to learn that many US carriers (and others as well) do not commence engine fire drills until the aircraft has completed flap retraction. Have watched many times in the sim (even with experienced crews) early fire drill actions leading to massive height and directional loss, resulting in a sim crash that in three cases, put it out of action for two days.
Far better IMHO to wait awhile. This is true in jets today unlike in the DC-7 days where an engine fire was MUCH more serious. Some it would appear do not keep up with the times.