 The subsequent global financial collapse that began in 2008 once again reversed the boom and employment opportunities will likely continue their cyclical nature for years to come.The American Association of Professional Landmen (AAPL) (until 2010 "American Association of Petroleum Landmen") is an organization of professional landmen, who agree to a standard code of ethics, a mission statement and other policies.The AAPL offers certifications recognized throughout the industry as indicators of competency, proficiency and professionalism.