mohamad saeed kodaimati , 24 , faced two counts of making false statements involving international terrorism .
saeed was born in syria and became a naturalized american citizen in 2008 at age 17 .
the 24-year-old allegedly lied to fbi he had not been involved in any fighting , had never fired his weapon and did not know any isis members .
posted photos on facebook carrying guns and posing with known isis militants .
in online posts , saeed allegedly bragged about working for sharia court and fighting in battle that lasted four months .