AP | Associated Press Published August 18, 2015 01:02PM EDT PITTSBURGH (AP) — Two ninja-clad teens armed with a machete and expecting an easy robbery at a Pittsburgh convenience store got quite a shock when a cashier pulled out a sword and started chasing them. Surveillance video shows the teens entering Perry Market on Friday night. One goes behind the counter with his machete and demands money. But cashier Jewad Hayih was prepared, pulling out a sword to knock the smaller weapon out of one teen's hand. A customer grabbed the second suspect, but he broke free and both teens ran away. The suspects remained at large Tuesday.