Federal agents arrested a 22-year-old man at the Detroit Airport who they say was heading to Syria to help Hezbollah battle rebel fighters like these.
Mohammad Hassan Hamdan is charged with attempting to provide material support to a foreign terrorist organization.
The FBI says he told an undercover agent about his plans to travel to the Middle East on behalf of the group.
Former FBI special agent Dan Roberts says it can take months, if not years to gather enough information to bring terrorism charges.
SOUNDBITE: FBI special agent Dan Roberts
"Most of the time when you see these material support cases, you are talking about fundraising, you are collecting money here to ship overseas to give to Hezbollah, Hamas, or al Qaeda."
Hamdan is the second person to be arrested in the U.S. this week on charges of attempting to provide material support to a terrorist organization.
