The Special Ops community is stunned by No Easy Day, an unauthorized account of the al Qaeda takedown by one of their own.
Obama was as stunned as if that other Romney in the portrait had come to life and appeared before him.
“The whole committee was stunned,” said Rep. Anna G. Eshoo (D-CA).
c.1300, "to daze or render unconscious" (from a blow, powerful emotion, etc.), probably a shortening of Old French estoner "to stun" (see astonish). Stunning popularized for "splendid, excellent" c.1849.