One of my dear old friends who died a few years ago was a Crew Chief on the B-17 Bomber.... OK, wait a minute, I should back up here...does everyone know what years the US was in WWII? (1941-45)
...Ok back on story. Anyway, my friend's job was to make sure all the .50 Cal M2 Browning Machine guns worked. How many of these wonderful weapons were on each B-17???? (Depending on the model) 2 in the front, 2 on the top ball turret, one on each side (waist gunners) 2 in the bottom ball turret, 2 in the rear for a total of 10 guns.... and he had to make sure each gun was cleaned, oiled, barrel set with correct head space and timing.
In 1999, he could still tell me verbatim how to take one apart, put it together and set the head space and timing. (If you don't set the head space and timing right, it will not shoot, or it will blow up!)
So what was in motivation to make sure each and every gun worked perfect? If any gun failed on a mission over Germany, my friend had to take the place of that gunner on the next bombing mission. He told me that he was highly motivated!
I used the same idea in Iraq. We had some Tech folks who were kind of lazy about making sure something we had on our humvees worked each day....a few times I caught them sluffing their duty because they wanted to sleep in.
I found the lazy E-4 and brought him outside in front of the Sergeant Major. I told the lazy ass E-4 about my friend from WWII who worked on the machine guns. I told the Lazy Ass E-4 that if the equipment failed, he was going to man the gun the next time out. He tried to tell me that he was too important...and the Sergeant Major spoke up and said that was a good idea.
Now he was motivated.
So, as history rolls on, the equipment changes, the guns change (except we're still using the same M2 .50 cal machine gun that was used in WWII)...but the old ways to motivate the REMFS are still good.