. >> reporter: shiela mc-victor has an exclusive in depth look at the illnesses facing veterans of iraq and afghanistan and the fiery pits that may have poisoned them. also tonight a big health warning from the fda about one of the most common medical procedures facing millions of american women, america tonight sarah hokye brought us a procedure that some fear may spread cancer and a follow-up and what doctors should do about it. and branches of government. >> capitol christmas tree is pretty new. >> reporter: we have a story behind the tree now gracing the nation's capitol. >> three, two, one. >> reporter: lighting up a season of peace on earth in a place where peace can be hard to come by. ♪ and good evening and thanks for joining us i'm joie chan and half of the veterans in iraq and afghanistan sufficient tear a disability connected to their service. they range from traumatic physical wounds of war to life altering psychological scars and now there is increasing concern from millions who say the military should recognize their wounds from poisons they say they were exposed to in the

. >> reporter: shiela mc-victor has an exclusive in depth look at the illnesses facing veterans of iraq and afghanistan and the fiery pits that may have poisoned them. also tonight a big health warning from the fda about one of the most common medical procedures facing millions of

. >> reporter: shiela mc-victor has an exclusive in depth look at the illnesses facing veterans of iraq and afghanistan and the fiery pits that may have poisoned them. also tonight a big health warning from the fda about one of the most common medical procedures facing millions of