Urban E&E

Before the mission
First off, determine the responsiveness of the police force, their effectiveness, and their resources.
Set up several safehouses and hides throughout the area; it is best to have local agents in the area, as if UE&E isn't needed, the agents can make good use of the supplies. The number of agents should be determined by the local law enforcement, as well as the local populace and how much they care.
If you are in a 3rd world country, these may not be needed, but can be helpful.
Memorize at least three ways out of the area
Try to set up false identities and bank accounts so as to be able to move undetected.

If you don't have the resources

See a car? Hot wire it, and use a route of egress. Once you have gotten relatively far, dump the car, and get another, or get a taxi. Make sure the driver can't see your face, but in an inconspicuous fashion. Get out, and slowly, over a few weeks, or months, get back to your main HQ.

Or, hit the shadows, hard.
If the LE have K9 units, run with jagged, overlapping patterns, and stick to hard ground or water, run through thorns and stinging plants to fuck a dogs nose. Cowkaaaine+blood, when left kills a dog, even if small, mix 50/50.
You can use a bitch scent.
Get in a goddamn car!
Once you hit a building that looks unused, or empty, Pick the lock, and get in. If you must, break a window, and get in.

Take inventory, what do you have?
With the weapons, how many people can you effectively fight at once?
Are you injured?
Can you regain communication with your team, or are you without a main HQ (not recommended)?
Once you have regained you wits, and gotten over the base shock, Look outside, or hit up a radio station to see if the police know who committed the crime, what you look like, or have a lock on your whereabouts.
If you haven't been identified beside general description, change your clothes, and get you fake papers together, and get out.