From the Des Moines Register:

The Iowa National Guard has no plans to have its chaplains perform same-sex unions if the Pentagon decides to recognize openly gay military service later this year, a military spokesman said today

“Per federal law and Department of Defense policy, our chaplains are prohibited from performing same-sex unions or marriages as conducting these types of ceremonies in a duty status would violate the Defense of Marriage Act. At this point we have not received any guidance from the Department of Defense regarding a change in that regulation,” said Col. Gregory Hapgood Jr., the Iowa National Guard’s public affairs officer at Camp Dodge.