An antenna includes a base element, grounding and feeding points, and first and second radiating elements. The implementation includes providing a view of an instance of an application on endpoint systems in response to a common option received from users of the endpoint systems of the application, receiving a role from each of the users that include an active participant role and a coach role, and receiving performance data from the endpoint systems. In operation, a signal is transmitted to a control system requesting a specific fastener configuration, and the control system causes positioning of the unloading mechanism adjacent the fastener storage device. Since no ship hardware modifications are required, the present roll control technology will be able to be economically implemented. In addition, the retroreflective elements cover at least about 5 percent of the outer surface of the flame resistant fabric.