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  1. 22 hours ago · Development Origins The McDonnell Douglas F-15 Eagle was introduced by the USAF to replace its fleet of McDonnell Douglas F-4 Phantom IIs. Unlike the F-4, the F-15 was designed for air superiority with little consideration for a ground-attack role; the F-15 Special Project Office opposed the idea of F-15s performing interdiction, giving rise to the phrase "Not a pound for air to ground." In ...

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  2. 22 hours ago · About 0.17% to 0.89% (pre-pandemic) [9] Myalgic encephalomyelitis/chronic fatigue syndrome ( ME/CFS) is a debilitating long-term medical condition. People with ME/CFS experience delayed worsening of the illness after minor physical or mental activity, which is the hallmark symptom of the illness. [10] Other symptoms are a greatly reduced ...

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