Among the work-related emails that Defense Secretary Ash Carter handled with his personal, unsecured email account was a message from a group promoting cybersecurity. Oh, the irony.

The Pentagon on Friday released 34 pages of Carter emails that he sent or received on his personal account, a practice that he acknowledged on Thursday had been a mistake. Carter said he is not a frequent user of email and never used his personal account to handle classified information.

None of the Carter email correspondence released by the Pentagon included classified material, although they covered only the period from April 1-30. In one, he complained about too many "windy" transitions in a speech draft, saying "wind is not my style."