You've landed a job, and you're going downrange for the first time. You're unsure of what's going to happen, and how you should prepare. Read on, and you'll soon be ready and confident!
Pre-deployment
Don't make any purchases until you're absolutely sure you've got the job. Certainty doesn't exist just because you've signed an offer letter. Relative certainty exists once the company has bought you a plane ticket. Once you have the ticket, begin saying goodbye to your family and friends, and begin buying gear.
Don't go overboard with gear. If you show up outfitted like Rambo you're going to look, and feel, like an idiot. I've seen KBR guys in theater with ridiculous, Mad Max based fantasies at work. Mohawks, pirate shirts, expensive tactical gear. Understand this: you are working a fairly normal job, in a fairly boring environment. Unless you are operating independently, CRC and your company will provide you with most of what you need. Aside from that, I recommend purchasing a good backpack, and possibly some threads. Blackhawk has good backpacks. Get something conservative. You don't want to look like you're playing SEAL. You do not want to be the object of ridicule.
As for threads, this depends. Your company may have a dress standard, so ask them. If they don't they will still be able to give you some recommendations. Talk to the guys downrange, where you will be working. Ask your site supervisor-to-be what equipment and clothing is necessary. 5.11 makes good tactical clothing. If this is going to suit your needs, then buy a some short sleeve shirts from them. Polos, or the tactical style shirts. Buy some 5-11 cargo pants. Listen to me: buy at least one long sleeve shirt. You absolutely must have a long sleeve shirt on to ride in a helicopter, and even if you won't be doing that the shirt may come in handy during a cold night, or a dust storm.
I reiterate: ask your company what you'll need. Don't go overboard.
When you leave, bring at most two bags. Make them backpacks if you can. You're not going on vacation. Pack very lightly. CRC will give you 2 or 3 heavy duffel bags to carry with you, so keep that in mind. Get the APO / FPO address from your company and mail things to yourself before you leave. Keep it minimum; most of what you really need can be bought once you get downrange, from the PX.
Company Processing
There is a good chance you'll fly to your company's HQ before you deploy. If you do, you'll spend anywhere from a day, to a few weeks there. You may be there just to meet the front end guys, and do paperwork, or you may be there to train on some system or gear. The impression you make here will make a difference with how well you're taken care of once you're downrange. You'll depend on the guys you meet at HQ for things like equipment, vacation, and pay. So be nice!
CRC (CONUS Relocation Center)
CRC really sucks. I've been there I think four times. Contractors deploying to work with the DoD must go through training, and for most it is CRC. Contractors deploying with the State Department go to another location for similar processing. KBR and some other companies have their own processing with their companies and don't have to go through CRC.
Your CRC will probably be at Ft. Benning, GA. You will fly into Atlanta, rent a car, and drive a few hours to Ft. Benning. If your company is nice, you'll stay at a hotel near the base. If you are less lucky you will stay in the CRC barracks. I've done both. You get to sleep a little later in the barracks, but you get a lot more comfort in the hotel. I say that you get to sleep later in the barracks because the hotels are half an hour from the CRC enclave.
Here's what you do at CRC: you wait for half the day. Then you fill out some paperwork, pick up some gear, or have some medical tests done. Then you wait the rest of the day. You'll be outside a lot, so dress accordingly. Southern Georgia does get cold in the winter.
At CRC you will have an opportunity to have a will and power of attorney created, for free. Take advantage of this. Keep a copy of each, and send the originals to your parents. A will is very important. A power of attorney may or may not be necessary, depending on your situation. If you do decide to have a PoA written up, be extremely careful with who name in it, and what rights you give them. You don't want your lonely wife to drain your bank account for a trip to the Caribbean with your old best friend.
Transportation to Theater
Once you're 'go' with CRC you are legal to deploy. There are two ways to do this. You may take government transportation from CRC, or you may fly commercial. Government transportation flies out near Ft. Benning and is a commercial jet that is chartered by the government. It will take you to Qatar, Germany, Kyrgyzstan, or anywhere else other than your final destination. From there you will take a military plane such as a C-17 or C-130, or possibly another chartered commercial aircraft, to a major base in your destination country. If that's the base you'll be working at, great. If not, you'll take other fixed wing or helo flights until you're where you need to be. Flying commercial from CRC is about the same. Only the first leg of your trip is not on a government chartered airplane, but rather on a commercial flight.
Hopefully your point of contact is waiting for you at the PAX terminal or helo area. If not, you've been prudent enough to write down his DSN number, and you can give him a ring and wake him up.
Settling In
You can get cheap sheets, a blanket, a couple towels, and toiletries at the PX. While I'm on the topic, I will suggest that you put a roll of toilet paper in the bag you carry around with you. I've been stuck without TP before, and I'd really rather not discuss the alternatives.
Enjoy the next year of your life.
Post-deployment
The Army wants you to go back to CRC for a few days after you demob back to the States. I've done the return CRC once; it's not as bad as the deployment CRC. You're mostly there to turn in your gear. I've skipped the return CRC all but that one time, and I've never had an issue. Once I'm home I turn in my gear at the nearest base. I call their supply section to get the address and to make an appointment. If you go this route, you may need to give them a good excuse as to why you're turning in your gear there instead of going back through CRC. If you do not turn in your gear, you will eventually pay for its time depreciated value. CRC will not 'go' you for your next deployment until you've paid them for what you didn't return. Keep your CRC issued gear receipts, and the receipts from the supply office you turn your gear in to. Bring these receipts with you next time you go through CRC. Also, it might be tempting to just keep your gear and bring it with you next time you go through CRC for deployment. If you do this it is likely that CRC will hold you back a week so that you can go through demob CRC before deployment CRC. Ridiculous, yes, but that's CRC's motto.