With a new defensive backs coach along with the addition of three veterans to the roster, this week's FedEx Tracking has a look at the secondary changes the Redskins have made this offseason to date.
After two seasons in which the secondary struggled at times against opposing aerial attacks, the Washington Redskins made a concerted effort this offseason to bolster their secondary with both quality players and veteran leadership.

That started with the acquisition of longtime NFL coach Perry Fewell to be the team's defensive backs coach.
Fewell – who first coached in the NFL in 1998 with the Jacksonville Jaguars – most recently was the New York Giants' defensive coordinator.
Fewell told Larry Michael, Voice of the Redskins, in February that he doesn't instruct players the same way, rather, by situation and learning preference.
From there, Fewell wants to make sure they are causing serious problems for opponents.
"A DB has to have a short memory," he said. "Sometimes you're going to win, sometimes you're not going to be successful. But I think if you challenge every ball in the air, that you can play with some confidence and maybe we can get our share of interceptions and get our share of turnovers."
Early in free agency, the Redskins signed two sought after free agent defensive backs, as they first landed cornerback Chris Culliver and then safety Jeron Johnson.
Head coach Jay Gruden told the media during the NFL Annual Meetings in Phoenix last month that Culliver "has the ability to travel with the better receivers," a needed quality in a division that features Dez Bryant and Odell Beckham Jr.
"We see a corner that's going to stick his head in there and make tackles and really fly to the football and challenge the ball when it's in the air and challenge people in bump and run," he said. "You can just see him competing on every down and in every phase, getting his hands on people at the line of scrimmage, running to the football, and doing a great job in run support."
Johnson, meanwhile, comes to Washington with little starting experience, but the potential to be a serious contributor on the defense in 2015.
Check out photos of the entire 2015 Washington Redskins offseason active roster in action.

Cornerback David Amerson

Defensive lineman Chris Baker

Linebacker Houston Bates

Wide receiver Reggie Bell

Cornerback Bashaud Breeland

Fullback Jordan Campbell

Offensive lineman Takoby Cofield

Tackle Tom Compton

Linebacker Will Compton

Quarterback Kirk Cousins

Defensive lineman Corey Crawford

Safety Da'Mon Cromartie-Smith

Wide receiver Jamison Crowder

Cornerback Chris Culliver

Safety Akeem Davis

Linebacker Dyshawn Davis

Linebacker Ja'Gared Davis

Tight end Chase Dixon

Wide receiver Quinton Dunbar

Kicker Kai Forbath

Wide receiver Pierre Garçon

Safety Dashon Goldson

Defensive lineman Kedric Golston

Wide receiver Ryan Grant

Quarterback Robert Griffin III

Cornerback DeAngelo Hall

Tight end Je'Ron Hamm

Cornerback Tajh Hasson

Defensive end Jason Hatcher

Linebacker Adam Hayward

Linebacker Alonzo Highsmith

Running back Michael Hill

Safety Duke Ihenacho

Wide receiver DeSean Jackson

Defensive back Kyshoen Jarrett

Defensive end Ricky Jean Francois

Linebacker Jackson Jeffcoat

Safety Jeron Johnson

Running back Matt Jones

Wide receiver Tony Jones

Defensive lineman Frank Kearse

Linebacker Ryan Kerrigan

Defensive lineman Terrance Knighton

Offensive lineman Arie Kouandjio

Offensive lineman Tyler Larsen

Guard Shawn Lauvao

Guard Josh LeRibeus

Center/guard Kory Lichtensteiger

Wide receiver Colin Lockett

Guard Spencer Long

Kicker Ty Long

Tight end Devin Mahina

Quarterback Colt McCoy

Linebacker Dasman McCullum

Cornerback Tevin Mitchel

Running back Alfred Morris

Tackle Morgan Moses

Linebacker Trent Murphy

Offensive lineman Ty Nskehe

Defensive lineman Stephen Paea

Tight end Niles Paul

Tight end Logan Paulsen

Linebacker Terrance Plummer

Nose tackle Jerrell Powe

Tackle Bryce Quigley

Running back Silas Redd Jr.

Tight end Jordan Reed

Offensive lineman Austin Reiter

Linebacker Perry Riley Jr.

Wide receiver Andre Roberts

Nose tackle Travian Robertson

Linebacker Keenan Robinson

Safety Trenton Robinson

Cornerback Justin Rogers

Wide receiver Rashad Ross

Offensive lineman Brandon Scherff

Outside linebacker Preston Smith

Tackle Willie Smith

Linebacker Martrell Spaight

Wide receiver Cole Spencer

Long snapper Nick Sundberg

Safety Phillip Thomas

Defensive lineman Robert Thomas

Running back Chris Thompson

Punter Tress Way

Tackle Trent Williams

Linebacker Trevardo Williams

Running back Trey Williams

Cornerback Trey Wolfe

Fullback Darrel Young
"I think he's an interesting prospect, really," Gruden said. "He's young, he played great on special teams, and he's another one that really is excited about the opportunity to get a chance to play. He's had limited opportunities because of Kam [Chancellor] and the safeties they have there (in Seattle) — Earl [Thomas] — but I think he's got the ability to play in the box, and, I think, can cover some ground."
Then last Friday, the Redskins announced a trade with the Tampa Bay Buccaneers that landed them two-time Pro Bowler Dashon Goldson.
Goldson said that while he may be the newest player in the group, he wants to be the one that sets the tempo from the get-go.
"I love being physical, and I think that's definitely something you have to definitely put together a defense," he said earlier this week. "A physical defense is always good. Some people don't like to get hit – point blank. That's just the way it is. People don't like to get hit. That's what I'll bring to this defense, and I'll try to get the guys around me to feed off my energy. I can say vice-versa. I'll feed off theirs."
RELATED LINKS:
--FedEx Tracking: Defensive Line Additions
--FedEx Tracking: Opponents’ Free Agent Moves
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