Use "moment of truth" in a sentence

1. This is the absolute...... unprecedented moment of truth.

2. Allied is dedicated to being there in the "moment of truth", when it matters to the customer most

3. Customers indicate after an event of loss specific expectations and further the adept service is of customers point of view a ‘moment of truth’.

4. In this respect I should say that, at this moment of truth, which reminds me slightly of a certain type of Spanish or Portuguese spectacle, there is a whiff of adrenalin, as some people seem to be afraid of others.