Counterattack

Before

1. Attack on Intention - Attacking before the opponent even makes any sort of preparatory move. This is very similar to the pre-emptive attack in self-defense circles. 

2. Attack on Preparation - Anytime before the opponent's attacking motion. Examples might be the opponent pulls his arm back or steps forward. 

During

3. Attack on Delivery - The period in the middle of an opponent's attacking motion, just after it starts but before it hits its target. 

After

4. Attack on Completion - When opponent's attack reaches full extension.

5. Attack on Recovery - is just before the opponent recovers his original fighting stance (the retraction of the arm or leg). 

Interceptions

Stophit

See:

Counterattack Timing with Tim Tackett

Chinatown Jeet Kune Do pg 77 - 82

Blackbelt: 9 More Prime Principles: Jeet Kune Do

JKD: The Arsenal of Self-Expression

Interception

https://www.facebook.com/watch/?v=933093910518521