Airborne

Traveling this weekend to Boston, I noticed lots of differences in the TSA security. And for the first time in a long time, it seems to me that instead of the security becoming more strict, it seems to me that it has become a bit more relaxed.
Since 9/11, the security in airports has gotten increasingly more strict. I came across a timeline of important events that have sparked new TSA regulations over the past 12 years or so on travelinsurence.org.
*November 2001-After 9/11, TSA was created to make air travel safer
*December 2001- Passenger tries to ignite a "shoe bomb", TSA requires passengers to take off their shoes in order to pass through security
*August 2006- Liquid explosives are attempted to bring aboard an aircraft, TSA requires all liquids aboard to now be reduced to small travel sized containers
*October 2007- In response to attempted remote control explosives, the TSA adds additional carry-on scanning devices to security
*November 2010- TSA introduces full body x-ray scanners that display completely nude x-rays of passengers, full body pat downs introduced
*October 2013- TSA Pre allows passengers to get a background check before entering the airport, to make security easier
It seems to me that after a period where the news from TSA was about newly implanted technology that makes it harder to get on board a flight, the TSA is backing off a little, and trying to now make it easier. Will these new freedoms cause more problems in airports? Or appease the unhappy passengers who claim to feel invaded during the random pat-downs.
Just last week their was a shooting in the Los Angeles airport, where a man shot down and killed a TSA agent. Will this cause the TSA to become more strict? I mean how much more could they possibly do?!? Or will this be brushed off, and the government will continue to try and make it easier for passengers to get through security. Comment below.