EDIT: The Tribune has placed the article behind its PayWall. It was not there earlier. Sorry about that. As soon as another service picks up the story I will relink.
EDIT: Now the PayWall is gone. EDIT: PayWall is back.
EDIT: It is after 8PM. Well, lemme see what I can cut and paste from other sites on the web; Fair Use etc.
EDIT: 9:00PM I changed the url for the Trib article (above) and the PayWall vanished; it probably will return sooner than later.
Below is what I came away with from the Trib and other sites that sourced the Trib:
A Lake County sheriff's sergeant apparently left his assault weapon on the trunk of his car, then drove away without realizing his mistake until the weapon was recovered from the middle of an intersection, officials said Monday.