This semester I am in part 2 of my capstone project. We have all of our protocols written to begin construction and testing but we are missing one key component of the device. The materials got delivered about a month ago. Purchasing, the company, and the professor told us the order was there. In the meantime we could not start testing until our training was done so we waited a week or two and got trained. In the meantime, none of the group members went to go check all of the materials. This past week when we went to start, when checking the components we realized that one of the products was missing which happened to be a key component. When calling the company we found out it is back-ordered until a date past our deadlines. Until we called the company, no one told us this was back-ordered. As a solution, we had to spend more money to rush ship a replacement to this component. However, even with the rush shipping, it shortens our testing period by a lot since we have to go through purchasing. As a result, we missed some milestones on our Gantt chart and are struggling to get this testing done in time by all putting in extra hours. The mistake of not checking the components when they came in costed us both time and money. From now on, as long as I am able to, I will always check the parts myself when they come in. If we checked right away, we could have ordered the new component a month ago and it would have been here.