We told a client who has been making ridiculous changes to a project (an entire hotel, and they're modifying things that have already been built) that they needed to order the several dozen TVs NOW.
It was three months ago that we first said that. Order them. NOW. Get them in. Better to have a container full of TVs than get caught by some bizarre delay that nobody could have planned on.
Yup, they haven't ordered the TVs yet and now they face a months-long wait.
A good answer is easier with a clear question giving the make and model of everything. "The biggest problem in communication is the illusion that it has taken place." -- G. “Bernie” Shaw