Williams 2003 is a critical appraisal of securitization theory and its relevance for the study of international relations and security. More recent overviews include Emmers 2007, which provides an undergraduate-level introduction to the key contributions and limitations of securitization theory.
Major League Baseball teams carry five to 10 assistant coaches, including two base coaches, a bullpen coach, and hitting and pitching coaches. Each earns between $150,000 and $700,000 per season, according to a 2011 story in The Wall Street Journal. Experience and success bring higher salaries.
While a lot of teams have changed coaches in recent seasons, five NFL coaches have been with their current team for at least ten seasons. The NBA, MLB, NHL, and English Premier League have five such coaches combined. And it goes beyond the longest-tenured coaches. The average NFL coach has now been with his team for 4.3 seasons. MLB managers are second at 3.7 seasons, while Premier League managers come in last at 3.0 seasons, despite one of their 20 managers (Arsenal's Arsene Wenger) being in his 21st season.