What is the most difficult situation you have had to face and how did you tackle it?

I had to let a person go due to illness, he had epilepsy, and I was then Quality assurance manager for a motor dealership, I took the necessary steps to board him off correctly. With the help of the motor union. 

When I was at Site for Shutdown project ( Petrochemical Company ) Having only few hours to solve it , Without having any resources .

I solve it immediately by communicating & convening other contractor for a help & Jointly we work it & Solve the Problem with Success.