mark segraves has our report.is a soft-spoken former marine who just wanted to do something nice for his wife's birthday so he bought her flowers at the bank where she works. >> i try to think of people when i can. as mark and his wife were in the parking lot saying their good-byes a. motorcycle pulled in and drove right up to the back of the bamnk. the rider went in wearing his helmet and then he had a bank employee right by his side. >> she starting pointing and saying, hey, he robbed me, he robbed me. >> reporter: he showed a teller a knife. he said, you know what this is. it's a robbery. >> the teller complied and gave him bags full of money. he said, you will walk by me as i walk out of this bank. >> reporter: the man got on his motorcycle and took off. he got on his truck and went after him. >> he recognized once we started leaving the shop that i wasn't just following behind, that i was coming for him. and he decided to take off at that point. >> reporter: wired calls his wife still back at the bank. she ca