The Pentagon is expanding polygraph testing for officials with access to sensitive intelligence programs, aiming to curb unauthorized disclosures. This move comes as the government prepares to release a massive tranche of documents related to the 9/11 attacks, a long-awaited transparency effort. Separately, researchers are exploring whether crushable concrete technology could mitigate the impact of future plane crashes, potentially saving lives during emergency landings.

These developments highlight ongoing tensions between national security secrecy and public accountability, alongside innovations in aviation safety engineering.