When the manager gave us the gun, we started the project immediately.
Когда менеджер дал нам старт, мы сразу начали проект.
Definitions
To give (someone) the gun means to accelerate or increase speed, especially when driving a vehicle. It can also mean to encourage someone to act quickly or with more energy. The phrase originates from early automobiles, where 'giving it the gun' referred to pressing the accelerator, as if firing a gun.