I was notified of an available position by a friend and told who to contact. I sent an email with resume attached and a brief cover letter. I also left a message with the point of contact simply stating i had been given his name by a friend and told to email and call. My email was returned rather quickly and i received a call to set up an interview. The interview was professional but not tense. The interviewer was polite and it was more like a discussion of what the job would entail and how my education and work experience might suit their needs.