According to the story, Mike and his buddy were Marines, but when Mike first meets Kate he is in Army dress-blues.
The characters drive past a monument sign for "Mountain State Park" which is supposedly in Oregon. However, the filmmakers neglected to replace the flag for the Canadian province of British Columbia, seen flying proudly next to the sign.
The movie is set in the U.S., but most vehicles have license plates from the Canadian province of British Columbia, thinly disguised with American flag stickers.