The interview itself was fairly easy. However, the process it takes within interview stage is quite long because your clearance first has to be verified. For those with the appropriate clearance level, it took me roughly two months before I was hired. The interview itself however only took ~30 minutes. I was interviewed by one manager - in person. I did not have a background in construction, however I was still confident with my security background for the interview. Most — if not all questions were security based.