Subject: What exactly does a trace evidence analysist do?

A few weeks ago i went on a trip to washington D.C. and we visited the FBI 
building. We took a tour of where all the forensic scientists work. While we 
were taking a look at all the different things these scientists did there was 
one area that really caught my interest and i would like to work at making it 
my carreer. I have been told by a family member that that area i was interested 
in was that of a trace evidence analysist. the tour guide said that these 
scientists will get the evidence from a crime scene and will take everything 
off of it and analyse it. The example she gave us was that of a t-shirt where 
the scientist will take a brush and brush everything off the shirt onto the 
table and take all of it and analyse it. she mentioned hair and fibers too. I 
want to know if what she was talking about was the job of a trace evidence 
analysist because if it is, i would love to become one. If it is not what is a 
trace evidence analysist and what do they do?

Re: What exactly does a trace evidence analysist do?