Captain's Log, Supplemental:  
We are in orbit around the third moon of the gas giant Rixpax in the Risa system.  
Admiral Spire has taken command of all Starfleet commands in the system, centering evacuation efforts around the Inflict.
We are nearly through transporting everyone off the planet.   Storage tanks have been configured for species requiring environments that would be toxic to the rest of the crew, officer and enlisted pilots are crewing a convoy of shuttlecraft and the decks are full of Starfleet personnel, Federation citizenry, visiting dignitaries and tourists, and we just learned about a squad of 1st Class Academy Cadets  in the system for their summer tour.
Fisher reports all transports complete.  And Sierra says the cadet shuttlecraft is on final approach.
Good, Jeffereys.  Do a last scan for life forms.  Eurayle, keep the shuttles up to date on our path.  I don't want any of them outside of transporter range at any point, or bouncing off each other.
Sure.  Um...why are your cadets not at the Academy?
Medusan students stay at school until they graduate.
Part of the program, Commander.

After their first year at the Academy, 3rd Class Cadets take tours of various commands and facilities around Starfleet.  The next break, as 2nd Class Cadets, they serve for two months on a starship, and when they're 1st Class, they tour again.

It gives them a close-up view of how the Fleet works and operates.


Oh.  And if it turns out they're worthless as officers, it gives you a chance to throw them out an airlock on a back-planet orbit?
No, Eurayle, that's not the idea at all.  We cherish every one of our future officers.  Even the bad ones can be salvaged, somehow.


Optimists.
I'll never understand you people....


Meanwhile, at the hangar deck:


Vwooooooshhhhhhhhhhhh-klunk-klunk.
Alright, ladies and gentlemen, if you'll step off and form up at the bulkhead...

BONK!
YIPPEE!    
     YAHOO!
PIKACHU!
Whabba DING Dong!

What the---Stop that!
Stand over there!
PUT THAT DOWN!
Say....
Chirrp.
Sir!  They aren't 1st Class Cadets!
They're First YEAR Cadets!


First year....MIDSHIPMEN?!
All Hands RED ALERT!
Hey!  Lookit me!  I'm shooting space guns!
Bakow!  Bakow!
Die Klangongs!


Sir, we can't go alert with thousands of civilians on board.
Y' think?  Okay.  
Chirrp.
All hands, we have a midshipmen infestation spreading from Hangar Deck #1.


Can we use phasers, sir?
Lieutenant, these are the future leaders of Starfleet.  We need to get control over them, not shoot them.


Right, sir.  By the way, how well do you remember your first summer at the academy?
As a matter of fact, I was a champion at... I mean I usually...Oh heavens.
All hands, set phasers on 'stun them stupid!'
And someone tell Admiral Spire what's going on.

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