Alan Johnson survived a ballistic missile attack while on deployment in Iraq. Now, he and others are encouraging lawmakers on Capitol Hill to swiftly reform how traumatic brain injuries (TBIs) are detected and studied . Johnson, a retired U.S. Army lieutenant colonel who served for over 27 years, survived an Iranian-fired ballistic missile on Jan. 8, 2020, while deployed to Al-Asad Airbase with the 34th Expeditionary Combat Aviation Brigade. He and his colleagues experienced the largest-ever