I'll play.
Not ready to put my cards on the table as a fully formed scenario but I'm hoping that above all,no matter how any of us are leaning,this more than anything else is a search for the truth.I'll take all the help I can get.....
Walker007 and Japple have made some observations that mesh with some of my thinking,this is where I'm running with it.
No set up,no suicide...Joe knew at least one of the 3 once Joe saw him,Joe had to die.
1.One of the male whites was a cop
2.Either the male white or the male black was a drug connection
3.There are cops in the area playing along with people moving drugs
4.All 3 if discovered would have enough to lose to warrant murdering Lt.JG
Odd location for this type of meeting. Were they carrying a large amount of drugs/cash? Who does this type of meeting by traveling on foot to a "remote" location that doesn't allow them immediate access to their cars? Typically, exchanges are quickly moved from one vehicle to another, not carried back to a car parked a good distance away. And if they did choose to do this, why did they remain in such a visable location (while acting "suspicious"), that would allow Lt G to see them? How does this fit with Lt G being on foot at scene for 20 minutes? Where were their cars? Would the drugs and cash have left even more of a scent for the dogs to track?
5.Even if escape was possible,the dirty cop would have been ID'ed by Lt.JG
If so, the decision to select this location was a poor one since it allowed Joe to get close enough to ID the dirty cop before any of them saw Joe. They also would have had to "escape" without a trace after shooting Lt G and somehow leave no trackable scent trail or be found on any video recording before of after the incident.
6.Joe got out flanked somehow and was forced to drop his gun= No Sign of struggle
For this to happen, they would have had to run initially, as Joe reported via radio. They would have then had to stop, formulate a plan, split up, and then outflank Joe which seems highly unlikely in their moment of panic. This would have also been a huge gamble because it could only be attempted if Joe disregards typical procedures and immediately pursues them into the woods without waiting for backup. If Joe waited for backup, or proceeded slowly, they would have been hiding in the woods waiting to outflank him while being surrounded by backup units and therefore losing thier short opportunity to escape. On the radio, Joe also didn't portray a sense of urgency that indicated he was going to sprint into the woods without waiting for backup. He actually never requested it, only said ok after the dispatcher asked for a second time if he would like backup units.
7.A cop would know how to kill a cop with his own gun leaving little to no evidence
If this happened, it should have been obvious from the residue tests and other evidence (side note: it is very disappointing that despite the fact that they took a great deal of time to process the evidence while enlisting the assistance of so many agencies, experts, and special crime labs, the gun shot residue tests were reportedly "inconclusive"). It isn't likely that they had gloves so if they took steps to "leave no evidence" it would be clear to LE that the gun was wiped off and would have likely left additional evidence. If he was forced to give up his gun without a struggle, why was the first shot a glancing hit off his vest? Why were the 2 bullet casings so far apart? If they were so concerned that they decided they were going to murder a cop, why only shoot him once in chest? He was found face down and there was no way for them to be sure that the shot was fatal.
8.The scanner thread radio times can fit
9.Neither Lt.JG or the 3 subjects expected to see each other that morning (again No SetUp)