Sixty-seven Philadelphia police officers are going to Chicago this week to assist in security operations for this weekend's NATO summit.

The officers, who will be drawn from around the city, will be in Chicago Friday through Tuesday, said Officer Jillian Russell, a Philadelphia police spokeswoman.

The summit is scheduled for Sunday and Monday and is expected to the target of a variety of protests.

Police from Milwaukee and Charlotte-Mecklenburg, N.C., also will be helping their Chicago counterparts, the Associated Press reports.

Philadelphia Police Commissioner Charles H. Ramsey started his law enforcement career in Chicago and was considered for the top police job in the Windy City last year, but he decided to stay in Philadelphia instead.