Sushobhan Avasthi was at his computer at 4 am on a Saturday morning in JP Nagar, Bengaluru. 10 km away Saurabh Chandorkar was doing the same. This was the only time they could find to work without being able to pay attention to their children. They were debugging code that controlled the CeNSiIlator, a low cost ventilator, another 10 km away in the Centre for Nano Science and Engineering at the Indian Institute of Science. Dr. Justin A Gopaldass from Manipal was going to come in 72 hours to examine the device and give his pronouncement. Harshvardhan Gupta and Ankit Rao had just left after highlighting the glitches. They were going to be back in the lab at 10 am on Sunday morning to run the code. The team of 10 core engineers and 30 collaborators had been working non-stop for 120 days to make a low cost ventilator that could be produced quickly. This is their story...