absurd_res aircraft airplane alien alpha_channel artist_logo artist_name black_mesa blurred_background bomb brown_body clerian countershading cybernetics cyborg detailed_background digital_media_(artwork) explosives fight flying green_sky group half-life harrier hi_res jet laser laser_beam living_machine logo machine manta_ray_(half-life) missile mountain multicolored_body nature nature_background not_furry orange_body outside river sky tan_body text valve valve_corporation vehicle yellow_body yellow_sky
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