If you follow them you can clear up "what that means". This Rawstory article doesn't use the phrase "may have", which leads me to believe what you are really complaining about is the
http://www.thenation.com/doc/20090817/scahill">original story in
http://www.thenation.com/">The Nation by
http://www.thenation.com/directory/bios/jeremy_scahill">Jeremy Scahill. It is Scahill who uses the phrase "may have murdered or facilitated the murder of...".
But Scahill provides the links to the actual affidavits of the two witnesses. So curious readers are only a couple of clicks away from the actual original source and the original words of the witnesses, which they can then judge for themselves. So Scahill is not a "reporter", he is a **REPORTER**.
The Rawstory reporters and the OP-linked article are just reporting on an earlier article by someone else, which Rawstory will do from time to time. Some people will complain about this but I appreciate the service they provide and the fact that they always provide links through to the original story. Piggybacking off of someone else's work happens all the time in the MSM but without the honest attribution and links that are provided by Rawstory. Rawstory also does do original investigative reporting although I don't know whether these particular writers do -- I haven't paid attention to that detail.
Now that I've pointed out that reporter Scahill gave us easy access to the actual testimony, let's let it speak for itself.
John Doe #1:
I have learned from my Blackwater colleagues and former colleagues that one or more persons who have provided information, or who were planning to provide information, about Erik Prince and Blackwater have been killed in suspicious circumstances.
http://s3.amazonaws.com/thenation/pdf/JohnDoe1Declaration.pdfJohn Doe #2:
I am providing this Declaration as "John Doe No. 2" because I fear violence against me in retaliation for submitting this Declaration. On several occasions after my departure from Mr. Prince's employ, Mr. Prince's management has personally threatened me with death and violence. In addition, based on information provided to me by former colleagues, it appears that Mr. Prince and his employees murdered, or had murdered, one or more persons who have provided information, or who were planning to provide information, to the federal authorities about the ongoing criminal conduct.
http://s3.amazonaws.com/thenation/pdf/JohnDoe2Declaration.pdfThe affidavits are pretty clear, so far as they go. Both of the affiants have been told by colleagues that Mr. Prince was complicit in the murders but the affiants have not seen with their own eyes Prince murdering anyone and have not heard with their own ears Prince ordering up the murder of anyone. Obviously there are more details that we would like to know: exactly who are the colleagues that told them this, exactly what did those colleagues say, and exactly how do those colleagues know. All of those details should be expected to be gotten into in the future, if our justice system still works at all. Rather than relying on the hearsay, hopefully the original sources will eventually be found and questioned about it. In other words,
patience grasshopper.