Yes, you can work with defense organizations in Nashik. Some prominent defense organizations that hire aerospace engineers are DRDO (Defence Research and Development Organization) and HAL (Hindustan Aeronautics Limited). These organizations involve aerospace engineers in various roles, such as missile development, aircraft design, avionics, and defense research projects. Aerospace engineers can also work on cutting-edge technologies related to military aircraft and defense systems, contributing to the nation's security and technological advancement.