This document discusses applying agile methods to product development beyond just software. It argues that agile can accelerate tangible product development by nesting sprints within milestone frameworks and establishing high-performance cross-functional teams. However, functional managers often resist ceding control and collaboration, posing the biggest challenge to success. Case studies show that focusing agile adoption on planning, demos, and facilitation can lead to improved schedule adherence, decision-making, and overall project accuracy despite higher prototyping costs.