You have lot more to learn about how DRDO functions, how recruitment happens and what kind of base they have now vis-a-viz under what conditions they have grown to reach this platform. Its easy to find faults, its way to easy comment on loopholes and faultlines. But when you start learning yourself, you fall, you get marks, you might select wrong or follow wrong footsteps which could have become a norm, but all this happens when there are constraints, no one to guide, lead or support and when you hit the walls everytime and 1bn+ people expectations that you would run like Bolt