a funny exchange

In the random execution of my job, I came across something this morning that I wanted to clarify, so I emailed Doug, who knows some experts:

Git your guns, I need some lawyerin'!
Would you kindly guide your and your various lawyers' eyes to the below and tell me if it means what I think it means, that it's OK to carry a shotgun into a federal facility if you're legally hunting? The public (not to mention Dick Cheney) needs to know!!
From 18 USC 930:

(a) Except as provided in subsection (d), whoever knowingly possesses or causes to be present a firearm or other dangerous weapon in a Federal facility (other than a Federal court facility), or attempts to do so, shall be fined under this title or imprisoned not more than 1 year, or both.

(b) and (c) excluded for readability

(d) Subsection (a) shall not apply to -

(1) the lawful performance of official duties by an officer, agent, or employee of the
United States, a State, or a political subdivision thereof, who is authorized by law to engage in or supervise the prevention, detection, investigation, or prosecution of any violation of law;
(2) the possession of a firearm or other dangerous weapon by a Federal official or a member of the Armed Forces if such possession is authorized by law; or
(3) the lawful carrying of firearms or other dangerous weapons in a Federal facility incident to hunting or other lawful purposes.

His reply:

Are you going to dress like Elmer Fudd and, when you approach the metal detector, you’ll whisper "shhhh…be vewy, vewy quiet…I’m hunting rabbits…pwease wefer to section (a), subsection (d), 3, heh heh heh heh…" Can I watch?