John Breeden II has right: Amazon, Google and Donut should not to get to much power, by registering to many generic domains.
But: There is no application for .fbi. The other application is for .army, not .us-army. Therefore I do not see any applications for government-sounding domain names.
And by the way: ICANN has not yet approved any application for .army.
"But I don’t think they, or anyone else, should be allowed to gain control over so many names without a valid plan in place saying how they will use each one."
Every applicant had to explain in the applications what the sponsor wants to do with the domains: Donut will allow registrations for general public, Google will reserve some domains for the company, will permit registration for target groups (similiar to .aero) at other domains and will allow registrations for general public at a third group of domains. Amazon will reserve the domains for the company. The details of these explications you can read at http://newgtlds.icann.org/....
Hans-Peter Oswald
http://www.domainregistry.de
http://www.com-domains.com