To all Red-John-is-Bob-Kirkland-believers:
How do you explain the wall-writing "He is mar/He is man" in the season one? According to Bruno Heller, all questions will be answered after the reveal of Red John. So if it´s Bob Kirkland, there has to be a link to him.

Here is my proposal:
The second word is written in big letters, so its more like "He IS Man". Taking into account, that the writer was going to die, he or she might have been chatted, so the second letter looks like e but is an unfinshed o, and the big letter I could be very easily ment as an L. Then we have: "Ho LS Man" - short form for Homeland Security Man, a link to Bob Kirkland. Maybe the writer didnt know the name of his murderer, but he knew what his job was, so he gave that information. Starting to write the whole word Homeland, he realized that he will not have enough time to finish it before he will die, so he stoped the long word after the second letter and changed to the short version HLS, resulting in "Ho LS Man".