How can badge holders stay informed about security updates at O'Hare?

Badge holders can stay informed about security updates at O'Hare primarily by attending briefings and reviewing communications from airport security. This option emphasizes the importance of direct and formal channels of communication that are specifically designed to provide accurate and timely information regarding security protocols and updates. These briefings are conducted by authorities who manage airport security and can offer detailed insights into any new measures, best practices, or changes in security protocols that affect all personnel at the airport.

The other options, while they may provide some information, lack the reliability and specificity needed for crucial security updates. Social media updates can often be less reliable due to the potential for misinformation or lack of official verification. Discussing with colleagues may lead to sharing of personal opinions rather than factual updates. Reading the daily newspaper may cover events or issues, but it won't focus specifically on the critical and immediate security updates that airport personnel need. Therefore, formal briefings and communications directly from security authorities are the best sources for staying up-to-date on security matters at O'Hare.