The Brief More than 900 arrests have been made in Operation Midway Blitz since its launch Sept. 8, including a South Shore raid this week where 37 people were detained, some with alleged gang ties. Protests and clashes have taken place outside a federal immigration processing center in Broadview amid heightened enforcement in the Chicago area. More than 900 people have been arrested so far during Operation Midway Blitz, according to the Department of Homeland Security. Operation Midway Blitz began Sept. 8 in Chicago and across Illinois. Protests have also erupted in recent weeks outside a federal immigration processing center in west suburban Broadview.