Contract labor ? Do I need social security numbers If I picked them up from the mission and payed them cash, can I still claim the payed out without giving out a 1099 ?

If you give someone a Form 1099-MISC, then yes you will need their Social Security Number.  

You are only required to give someone a Form 1099-MISC if you paid them $600 or more.  If you paid that individual less than $600 you do not have to give them Form 1099-MISC but you can still take the deduction for what you paid them.

If you did pay one person $600 or more and you deduct this on your tax return without giving that worker a Form 1099-MISC, the IRS will ask you why you didn't.