>> we got an officer down there. reports of a stabbing. >> reporter: june 21st, lieutenant jeff neville was manning his post at bishop international airport in flint, michigan, when amor ftouhi car carried out an alleged terror attack emerging from a bathroom with a 12-inch knife, yelling in arabic, and ambushed him. >> it was an attack from the rear. it was very sudden, there was no warning. it was very intense. >> reporter: that's when a quick thinking airport maintenance man jumped in. >> the way that he reacted was -- was spectacular. because the maintenance man hadn't been walking beside me i wouldn't be here talking to you today. >> reporter: and tom, authorities believe fa tutouhi a lone wolf. lieutenant neville is recovering well and says he absolutely plans to return to his post at the airport, tom? >> alex perez for us tonight. alex, thank you. there was much more ahead on "world news tonight" this tuesday. the dramatic moment, an 18-wheeler barreled out of control. caught on camera. what fellow drivers did next. plus, we'll take a look at the parade of fourth of july deals this holiday. the good news tonight for