This definition appears very rarely
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Acronym Finder has 3 verified definitions for EA1
; Extended: 1000 miles in 2 move actions, Portal; Limited to Extended). Sending: Other Communication 5 (Sense Type: Magic; Dimensional 2: group - Magical, Subtle: encrypted). Spell Ward: Burst Area Enhanced Trait 12 (Traits: Will +6 (+15), Toughness +6 (+8); Burst Area: 30 feet radius sphere, DC 22, Selective) Magical Awareness: Senses 5 (Acute: Awareness, Analytical: Awareness, Awareness: Awareness, Extended: Awareness.