Some of the reports may be mistaken.
Some of the men may just be tourists or sightseers.
Some of the men may be collecting intelligence for real terror attacks.
Some of the men may want to be testing for a reaction of security or public awareness in a given area to find a weak target of opportunity.
Some of the men may be terror sympathizers who want to terrorize by the act of being seen taping targets of opportunity.
Do have any other possibilities to add to the list?
I doubt it was a serious threat.
Feds Arrest Al Qaeda Suspects With Plans to Poison Water Supplies on Them
WASHINGTON — Federal officials have arrested two Al Qaeda terror suspects in the U.S. with documents in their possession about how to poison the country's water supplies, Fox News has learned.
The first case involves James Ujaama, who surrendered to the FBI last week in Denver. Sources say they found documents about water poisoning among several other terrorism-related documents in his Denver residence.
Sources say the government has additional evidence that prior to Sept. 11 James Ujaama acted as a courier delivering laptop computers to the Taliban.