may 12, 1985 - AZ-001's trajectory is calculated:
PROJECT: LANDFALL is initiated
Description:
"AZ-001's trajectory was calculated based on a series of high-density still images taken of the object over the course of 3 weeks. The physical speed calculations and elliptical positioning suggested that the object would intercept Earth's orbit by early 1999. Preparations for the object's arrival began immediately, codenamed OPERATION: LANDFALL."
-HOME Field Manual
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