Comment by 0xffff2

IIRC they used to always style "NASA" as "N.A.S.A." even though the agency itself never uses periods and is of course always pronounced as a word rather than initials. (This particular example stuck in my mind just because I work there). Hopefully "ICE" and "REI" reflect a change in that style to omit periods when referring to organizations that omit the periods in their own style guides.