Addendum: Apparently, after you foil the bank robbery, you have 15 minutes to collect other goodies. I don't know what these are, and how to get them, or if they are worth it.
Vidiot maps has a map of the mission (look for "Atlas Park -- Safeguard Mission" in the drop-down under the title). It looks as if there are keys, and things they unlock. I have a just-dinged-6 toon that needs to do this, so I'll post details when I discover them.
If any more-experienced player already knows the details of the after-mission goodies, please help!
THIS is a great resource for villains looking to get all the temp travel powers. 
Make a man a fire and keep him warm for the day, SET a man on fire and keep him warm for the rest of his life.
Incarnates: K'lir(Fire/Dark Corr):Hot-House Flower(Plant/Fire Dom):Kinrad X(Kin/Rad Def):Itsy-Bitsy Spider(Crab):Two Ton Tony(Mace/WP Broot):Teeny Weeny Widow(Fortunata/Widow) : Zeroth Law (Ice/Fire Tank)
There is some good information on Paragon Wiki about the safeguard missions k3k3k3.
Look here.
"Together we entered a city of strangers, we made it a city of friends, and we leave it a City of Heroes." - Sweet_Sarah
Lots of guides tell you to do the Safeguard Mission to get the 2-hour temp fly. I could not find complete, simple instructions here, but I did stumble around in-game long enough to figure it out. So, I'm writing it up in hopes that other n00bs might benefit.
A "police detective" contact will appear in your contacts list, around level 5. I was not paying close enough attention to know exactly how you get the contact. This may be an introduction from your first contact, or it may just magically appear when you ding 5. Look out for it. If someone wants to introduce you to a police detective, take it!
Anyway, go talk to this detective in person (always King's Row?). You'll be given a police radio, and it will appear in your contact list. Click on it to see a list of possible missions (I think it always gives missions in the zone you're in, and it was empty in Atlas Park, so stay in King's Row). Complete three missions from the radio. They are all door missions, with tougher enemies than you would normally face at level 5, so be on your toes!
There's a red progress bar under the detective (in the contact list). Once you have completed 3 radio missions, the progress bar will be full red. When you get that, go visit the police detective, and you'll get the "bank robbery" mission. Completion of that gives you the jet pack.
The bank mission puts you into a fake Atlas Park zone. Use the map to find the bank. Run to it, and avoid the mobs on the way. Enter immediately. The action starts as soon as you see the "The Bank is being Robbed!" message in red, as you approach the door). The mission itself is simple -- arrest all, and do it before they get away. Mine had the leader as a spines scrapper (high damage), with a crew of embalmed cadavers (Vahz minions?) who debuff you by projectile barf, apparently. I think the debuff messes with your accuracy and recharge times. So if you have hasten already, that will help. If you have room for non-critical inspirations, accuracy will help.
I failed the bank mission the first time I tried it. I idiotically went in with only one inspiration: endurance. DUH! I had to complete 3 more radio missions to get the "bank robbery" mission again. Second time, I stocked up on shields (squishy blaster toon) and accuracy, and completed it no problem.
Talk to the detective again afterwards, and you'll get the feather toggle in your tray. Right clicking it tells you how much time you have left on it. Conserve it! The clock only runs when you have it turned on. Use it only to go vertically, then get to a level surface and turn it off. When your two hours of flying is used up, that's it. It disappears, and you cannot get it again.
When it's toggled on, you'll look like a friggin' Sky Captain (you'll be seeing those in Terra Volta late 20s, as I recall), but it sure beats climbing fire escapes and jogging around looking for ramps!