Everything you need to know about new Rangers head coach Gerard GallantGallant has been an NHL head coach for three other teams6/14/2021, 10:01 PMRyan MorikFreelance Editorial ProducerMar 23, 2019; Las Vegas, NV, USA; Vegas Golden Knights head coach Gerard Gallant is pictured during the third period against the Detroit Red Wings at T-Mobile Arena. / © Stephen R. Sylvanie-USA TODAY Sports