Systems and methods for planning and optimizing air traffic flow within an airspace are provided. A diagnostic interfaces coupled to snow removal equipment and to an analysis retrieves and analyzes data and compares the data to a set of reference data. Such methods can further include the step of providing radiation or DNA damaging agents after administration of said Rad51 inhibitor. The faces have varying sizes based on variations in width. The stacking features can result in a stack of components with uniform spacing among the components of the stack.