An Air Force analysis of 2.2 million airmen's medical records revealed 198 cancer cases among missileers and 5,063 cases across the wider service.
A total of 15 aircraft from Fleet Logistics Support Squadron 40 are surging to fill in gaps due to a military-wide Osprey grounding.
The hospital where the Marines were sent had been planning a mass-casualty response training for the day of the real-life emergency.
The island of Mindanao has been reeling from the effects of heavy rain, displacing an estimated 795,000 people.
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