Everyone talking about how doing ALL OUT 60m sprints at the end of the workout is going to teach someone to kick when they're tired does not understand the science or physiology of running.
If the argument is that you want to practice what happens in a race, then actually practice that! Which is to say - if you want to close a 5000m race in 54 seconds, try running those 1200s and then do your 200s in 26-27, or maybe a 200-300-400 in 27, 40, 54. That is the actual speed of what you're trying to do.
Even if you're Centro closing a 1500m final in 50 sec, thats still very far away from his all out 60m speed which is probably something like low 40 sec pace.
Now, taking a day when you aren't heavily fatigued already, and doing 6x60m sprints, or whatever it may be, can help your ability to increase your max velocity, which will only aid your ability to close that 5000m in 54 sec.
HYPOTHETICAL CASE STUDY
If you can run a 5000m race in 13:10, and you can close a tactical championship style race in 56 sec, while also having the ability to run an all out 400m race in, say, 51 sec, then taking that day to do those FRESH max sprints can aid in your ability to improve your 400m race ability to 49 sec, which, assuming you maintain the aerobic ability to still run the 5000m 13:10, should allow you to move your closing lap from 56 > 54 sec.