// Risk Intelligence
| Risk Score | 8 / 10 High |
| Facility Type | ✈ Major Airport |
| Operator / Branch | City of Chicago Department of Aviation |
| Host County | Cook County IL |
| Nearest City | Pepperell MA |
| Primary Risk Radius | 5 miles |
| Secondary Risk Radius | 10 miles |
// Strategic Significance
OHare International Airport is one of the busiest airports in the US handling over 80 million passengers annually and serving as the primary hub for both United Airlines and American Airlines. OHare is the most connected airport in the US with direct flights to more destinations than any other. A terrorist attack at OHare would have massive mass casualty potential and would simultaneously disrupt both United and American hub operations affecting air travel nationwide. Iranian-linked threat actors have conducted surveillance of major US airport infrastructure. OHare was the site of the 1979 American Airlines DC-10 crash the deadliest US aviation disaster.
// Civilian Impact Assessment
Cook County with 5 million residents and 80 million annual passengers. OHare is the primary hub for United and American Airlines. A terrorist attack would disrupt national air travel. Iranian threat actors have surveilled major US airports. OHare is in the heart of the Chicago metro with millions of residents in the immediate vicinity.
// Evacuation & Shelter Guidance
I-190, I-294, OHare Expressway. Cook County Emergency Management TSA FBI and Chicago Airport Police coordinate terrorism mass casualty and aviation emergency protocols.