There's a LOT more to behavioral modification than just NILIF and DS/CC NILIF/DS/CC work for most dogs who don't have serious issues. However, for dogs with serious issues, there are more intensive methods. I suppose one broad general term for it all is "emotional modification". However, to address most aggression, you need to find out what the trigger is.

Truly authentic cases of "hair-trigger" dogs (dogs that aggress out of nowhere in reaction to seemingly nothing) are extremely rare. So, chances are 99.999% that Wallace does have triggers and that he does have signs leading up to his aggressive outbursts. The trigger can honestly be as simple as too much stress or anxiety or arousal. For example, I train Ivy in agility. She has very low stress levels. If I ask her to perform an obstacle more than 3 times because she's not "getting it", she'll take off and exhibit stress symptoms: zoomies, erratic sniffing, and, yes, even lunging and attacking. She is also intensely sensitive to the environment and has an odd case of leach reactivity. Now, guess how long it took me to identify her triggers? There is no one general term that I can use to describe Ivy's issues. Fear aggression doesn't work. Neither does "dominance" aggression nor stranger aggression nor resource aggression, etc. She just has reactivity issues, and that's how I explain it!

So, again, I suggest finding a certified behaviorist and getting a consult. An experienced professional will be able to scope out little signs that maybe you've missed, and s/he will be able to help you manage Wallace's issues more efficiently. I also discourage a "trial" plan for mental health drugs. From what I hear, many dogs don't react well to the drug initially, and that they need time to adjust to the medication. I'm worried that, if you intend to use the drugs only as a trial, you'll go through all the negative effects and won't have adequate time to scope out how well the drug is really working for Wallace. And remember, drugs are only tools to help you train. Drug or no drug - *training* is the most important aspect of behavioral mod.