UPS Industrial Engineer interview questions

My interview consisted of 1 single interview which determined if I was to be offered the job. UPS has a policy of interviewing a minimum of 3 individuals and there were 4 individuals including myself selected for my open position. The interview was a panel interview lead by the department manager with department supervisors (potential bosses) present. 4 people total. Primary questions asked where 1. Describe my current experience at UPS thus far, 2. What were my future plans, and 3. What have I done to improve the operation or a system. The 3rd question was the critical one. After being selected from the group, the 2 key reasons I was told I received the offer was 1. because of my positive energy and 2. because of my response to what I have improved within my immediate operation(s) in the past.