 So, let us now you know look at our you know key study today and the context is critical here because it is CRP of Jawan's who are actually going on a long operation into deep forest and they are supposed to filter available water from Nala's or from water bodies or from the rain and drink that water. So, what is this whole story will go one by one and see how the context addressed every aspect of the design and innovation journey. We at IIT Bombay have this center for excellence in internal security. This was set up by government of India and around 10 professors were actually you know roped in into the center to work for technologies for the armed forces. We have so much of technologies strength over here and so this center supposed to bridge this gap. My colleagues from Aeronautical Professor Hemindra Arya went for this trip and he came back and said it was very intriguing to watch the type of hardships our Jawan's face when they are in the field and you know we have to do something for them you know. So let me just quickly take you to the video of Professor Arya. I am core faculty in the center which deals with the internal security. In this regard some CRP of officers visited and they gave the requirements for various issues which are related to internal security. They explained me about the need for a water bottle which can help them in having a clean water when they are in operation and typically they have to carry around 7-8 liters of water. So keeping this in view I asked them what are the requirements. So you just look at the cause coming in Professor Arya's tone they are you know starving they are starving for water when they are in long operation. These are operations last more than the duration which they planned for. So they have to look for local water sources they have to you know go drink those water. So this is like we get a lot of these interesting insights when you talk to the users. And the commandant officer he said that I need to take these professors to the remotest areas where there is the most hostile environmental factors because in design innovation remember when you do your you know context and cause and your data collection you have to look at the worst condition for your study. If you look at the good condition is not going to get good ideas and good designs. So they took us to the very very tough situations remote operations as we say.