I thought this was a pretty good internet read on the event, I have not fact checked so don't jump down my throat if you find a mistake.
http://www.thegunzone.com/11april86.htmlThe attached photos so some tactical positioning but still the wrong weapons and tactics. It seems that the 8:2 odds may have given the Agents some sense of complacency.
http://www.thegunzone.com/11april86-pix.htmlThis police response was developed after this...
Or this one, it would be good on the Walking Dead TV show...