Please choose the correct ending to complete the given sentence: Work World: [header] How to get aviation repair career training [title] Conduct some research on aviation repair career training to learn more about the trade to see if it is the right choice for you. [step] Positions within this field require that workers have a strong mechanical aptitude. [title] Evaluate your ability to work with complex machinery and to accurately diagnose and repair mechanical systems.

Ending1: [step] Aviation repair positions involve working with advanced electronics and technical manuals. [title] Decide if you want to get training within a specialized area of aviation repair. Ending2: [step] You should apply for contracts in various industries and companies in order to practice aviation repair while employed in these professions. [substeps] Consider purchasing a mechanical training course to show how accurate your knowledge is as an aviation mechanic. Ending3: [step] This is especially important for mechanics that have not been trained. A good mechanic already has the skills necessary to perform manual work efficiently. Ending4: [step] This ability to work with complex machinery means that workers are better equipped to search for the exact location of an aircraft and connect to it through routine fixes. [title] Examine aviation repair training for technical training opportunities.

Answer format: ending1/ending2/ending3/ending4