Need Analysis-Whose job is this?

Training need analysis if often used right, left and center.Whose job is this, by the way?The trainer, the trainee, or the both........................Often its the trainer, however, I feel the onus lies equally on the shoulder of the trainer-trainee duo, in addition to other stakeholders who can have a indirect or even direct impact of the training.It's therefore not so simple as one might comprehend.Training need analysis is more than what meets the eye