Karen DeYoung reporting for the Washington Post:
The Obama administration’s first reaction to Sunday’s news that Egypt’s military chiefs had been forced from office was deep alarm. The surprise announcement from Cairo seemed to signal that Washington’s worst fears about the direction of the Egyptian revolution were coming true.
Political developments in Egypt during the past year have occurred at a speed that has often overwhelmed U.S. policymakers. The one constant seemed to be the military and its longtime chief, Field Marshal Mohammed Hussein Tantawi. His dismissal increased concerns about how much leverage Washington would retain as Egyptian President Mohamed Morsi consolidated power.
By early Monday, the administration had exhaled a collective, if perhaps temporary, sigh of relief. The newly named defense minister and armed forces commander, Gen. Abdel Fattah al-Sissi, is well-known to U.S. officials. He had “espoused cooperation with the United States and the need for peace with neighbors,” an administration official said.
That would suggest that the administration did not know about this and was caught off-guard. Which was my intuition. It's significant because it highlights — even if Egypt remains allied to the US, as I think it will — how little control Washington has on events and how little it is "in the loop." Which means, basically, a more independent Egypt.