The other thing is there are criminals who may or may not be Muslim, who help terrorists. I remember reading of a Jewish man, who was arrested for trying to buy shoulder-fired missiles... Here it is:
"NEW YORK - Three suspects, including a Jewish American, had their remand extended yesterday after being nabbed on suspicion of attempting to smuggle a missile to Muslim terror groups operating inside the United States.
British arms dealer Hemant Lakhani is suspected of heading the half a million dollar operation with two accomplices, Yehuda Avraham, a New York resident and Moinuddeen Ahmed Hameed, of Malaysia, who helped to launder the missile funds."
http://www.haaretz.com/hasen/pages/ShArt.jhtml?itemNo=329260&contrassID=2&subContrassID=1&sbSubContrassID=0&listSrc=Y
#11 is an article a few years old - the point was there are those who help terrorists for reasons other than jihad - like that 75 year old Jewish American - he prob "just" wanted (blood) money.
Jewish American could easily be an Arab, Muslim who happens to be from Israel, like perhaps a "Palestinian."