Solar Flare Warning as Earth in Crosshairs of Explosive New Sunspot
In a delta classification, there are regions of opposite ... decreasing the chance of them hitting Earth." Do you have a tip ...
The National Interest14d
Unstoppable Delta Force: The Very Best Special Forces Unit on Planet Earth
As you could imagine, becoming a Delta operator is a long, difficult process. Selection is open to anyone with a rank of Specialist (E-4) and Captain (E-3). Trainees must be 21-years-old or older.