"Tests" like this are about as valid as the disaster recovery tests that many companies run on their data centers. You know those tests where everyone knows about the test and has made extra backups and everyone is available to help in the recovery.
I still want to conduct what I call the '747 test'. That's the test where I walk into the data center one morning and announce "Good morning, a Boeing 747 has just crashed into this building, everyone inside is dead or injured. Now using the remaining staff, training, documentation and offsite resources, show me how long you take to be back in business.". It would be ugly but as the man said "the more you bleed in training, the less you bleed in battle".
NRA RSO, Certified Basic Pistol and Personal Protection In The Home Instructor