People in Killeen are on alert as the two trials involving American soldiers draw in massive attention.
Police are warning residents, restaurants, and large venues, to be on the look out for possible suicide bombers or copy-cat attackers.
A Killeen restaurant owner said he had a close call with terrorist, Naser Abdo.
Now he's very aware of who comes into his restaurant to protect his business and customers.
C&H Hawaiian Grill owner Henson Timo said just days before Abdo was arrested, he walked in to his restaurant to order food, but was acting very strange.
"You think back to the way he was acting, yeah he was acting suspicious, but at that time we thought it was just another regular customer that had a bad day," said Timo.
Timo said instead of sitting down to eat, Abdo was casing the restaurant, walking around and observing the other patrons and the restaurant.
"Most of our customers are military and so we're even more alert for that reason," said Timo.
KPD Staff Sergeant Margaret Young said paying attention to those small details could help save lives.
"All we're asking for is people when they see something and it just doesn't look right and, we've all had that happened before, where something just doesn't look right or sound right to take that extra step to pick up the phone and call us," said Young.
She said be on the look out for those wearing loose or bulky clothing, or look like they're hiding something under their shirt, like a vest or large belt.
And be aware if they've got a suspicious bag, a shopping cart, or even a stroller.
"This is just a great time, since the attentions already focused to have everybody be thinking on those lines and then if they do see something to go ahead and give us a call," said Young.
"For that reason we're just being a little more alert, anybody that's suspicious or walking around and looking at everything and it kind of grabs out attention now," said Timo.
If you do see something suspicious call Killeen police at 254-200-7905, or 9-1-1 if it's necessary.