During the episode, Kovac explains to Abby that "after Jasna and the kids died", he left Croatia and his family thought he was running away. However, the name which he calls his wife in this episode is actually that of his daughter. In episode 7.15, Luka tells Bishop Stewart that he had a family before: his wife Danijela and their two children, Jasna and Marko.
When Gates and the homeless boy are walking across the street and Ray honks at them the first shot of his car shows a grey newer model Toyota front end. When it cuts to Ray sticking his head out the window saying he heard they needed a ride it appears to be an older model red SUV. When they park his car in the alley to go in a building to look for the sick homeless child it appears to be the newer model again but it's red all over this time.