Qualifications Ability to exercise self-control in potentially volatile situations such as being verbally or physically confronted in a threatening or aggressive manner; must be able to work and concentrate amidst distractions such as noise, conversation and foot traffic; ability to handle interruptions often and be able to move from one task to another; must be flexible and not easily frustrated in dealing with differences of opinions. Ability to stoop, kneel, crouch, crawl, reach, stand, walk, push, pull, lift, grasp, and be able to perceive the attributes of objects such as size, shape, temperature, and/or texture by touching with skin, particularly that of the fingertips.