He was the general manager of the San Antonio Commanders of the Alliance of American Football (AAF) in 2019, the director of player personnel for the Dallas Renegades in 2020, and served as the executive vice president of football operations for the revived incarnation of the USFL for its inaugural season.

[2] As a rookie, he received his nickname "Moose" from backup quarterback Babe Laufenberg because of his large stature compared to the rest of the running backs.

[4] Prior to this change, blocking fullbacks had little chance of beating out traditional running backs, who had better statistics.

As Smith made his victory lap of Texas Stadium after the record-setting carry, Johnston hung back in the shadows.

The program was sponsored by NFL Players Inc.[8] Since 2013, Johnston has worked as a color commentator alongside Kenny Albert and formerly Dick Stockton.

In 2000, Johnston got his start calling NFL games by working the regular season and doing the High Definition broadcast of Super Bowl XXXV with Kevin Harlan for CBS Sports.

Johnston also began calling the collegiate Cotton Bowl Classic game for Fox in 2009, first with Pat Summerall, and then eventually Kenny Albert.

He appears as a regular guest on First Things First on FS1 (2017/2018) with Cris Carter, Nick Wright, and Jenna Wolfe.

In 2017, he continued his esteemed broadcasting career with NFL on FOX, teamed with Chris Myers and Laura Okmin.

[13] A native of Youngstown, New York, Johnston now resides in Dallas, Texas with his wife Diane, son Aidan, and daughter Evan.