These questions need to be asked.
Why not release your war records?
What is in your service records that you do not want us to see?
If you are using your service record in the campaign, do you not think it is right for the American people to see it in it's totality?
The four months refers to the swift boat.
There appears to be some conflicting information from two sites:
http://www.vietnamveteransagainstjohnkerry.com/page2.html and swiftboats.net.
The VVAK site says Kerry spent less than four months in-country and served aboard two Swift boats--#44 (Dec 68 - Jan 69) and #94 (late Jan - March). Each Swift boat has a crew of 6 including the CO.
The swift boat site indicates that Kerry was OinC of PCF 66 from 10/68 to 4/69. I also find it interesting that on that same boat, PCF 66, a William B. Hoole Jr, LT, is listed as OinC during the period 4/68-4/69. Something is screwy here. I haven't read the Brinkley book, but maybe that can shed some light as to what boat Kerry claims to have been on.
With this conflicting info, all the more reason for Kerry to make his military records available. I was laboring under the apparent misconception that Kerry served in-country less than 4 months, but he may have served in country for six months.