ADVANCE FOR SUNDAY USE, SUNDAY, JULY 17, 2016, AND THEREAFTER – FILE – In this Sept. 12, 2009, file photo, Penn State football coach Joe Paterno, left, talks with assistant coach Tom Bradley, right, on the field before a game against Syracuse in State College, Pa. Newly disclosed sworn statements by men who say Penn State assistant football coach Jerry Sandusky sexually abused them are putting new focus on his fellow assistant coaches at Penn State. A lawyer for Bradley says his client never witnessed any inappropriate behavior. (AP Photo/Carolyn Kaster, File)
ADVANCE FOR SUNDAY USE, SUNDAY, JULY 17, 2016, AND THEREAFTER – FILE – In this Sept. 12, 2009, file photo, Penn State football coach Joe Paterno, left, talks with assistant coach Tom Bradley, right, on the field before a game against Syracuse in State College, Pa. Newly disclosed sworn statements by men who say Penn State assistant football coach Jerry Sandusky sexually abused them are putting new focus on his fellow assistant coaches at Penn State. A lawyer for Bradley says his client never witnessed any inappropriate behavior. (AP Photo/Carolyn Kaster, File) Credit: Carolyn Kaster

Newly disclosed allegations from men who have accused Jerry Sandusky of sexual abuse raise fresh questions about what his fellow Penn State assistant coaches might have seen or known in the decades before his November 2011 arrest, and why they’ve largely stayed silent since.

Sandusky’s former colleagues found themselves on the defensive this week because of claims in court documents that some of the couple of dozen assistants who spent time in the program while he was there may have witnessed Sandusky abusing children as far back as the 1980s.

Aside from blanket denials made through lawyers and spokespeople, the former assistants who worked alongside Sandusky have said little publicly about the scandal.

“These guys are very sensitive to their employment. It’s not easy to go out and replace a half-million-dollar income,” said Penn State Trustee Anthony Lubrano, who is close with the family of the late head football coach Joe Paterno. “I get why they’re not standing in front of a microphone screaming from the top of their lungs.”

Three of the four coaches named in newly released depositions given by men who reached settlements with Penn State made statements this week denying claims that they witnessed or were aware of Sandusky’s abuse. The fourth coach, Joe Sarra, died four years ago.

The Paterno family’s lawyer issued a statement last week casting doubt on a bombshell claim in the documents that a boy told Paterno in 1976 that Sandusky had abused him and that Paterno didn’t want to hear about it.

Paterno told a grand jury in 2011 he first learned of Sandusky’s conduct in 2001, when then-assistant coach Mike McQueary went to him after seeing Sandusky assaulting a boy in a team shower.

Sandusky coached for Paterno for three decades starting in 1969, leading staunch defenses that helped win two national titles in the 1980s.

He founded a charity for at-risk children in 1977 and was often seen around the football facility with young boys, sometimes taking them on the road to big games. Even after his 1999 retirement, Sandusky kept an office on campus and had access to a staff locker room.

“When we saw the pictures of those kids on the sidelines at bowl games – I know it was hindsight, but it looked odd,” said Duquesne Law professor Wes Oliver, who has followed the case closely. “The assistant coaches saw all that and more.”

But, Oliver added: “Suspicious behavior is, of course, one thing. Actual acts are something else. One could imagine a natural reluctance to speak out about merely suspicious behavior.”

Sandusky is serving 30 to 60 years in prison for his conviction on 45 counts of sexual abuse.

His 2012 trial covered abuse dating to the mid-1990s, but Penn State has acknowledged it later settled with a man who said he was abused in 1971. That man is among 32 people who have shared $92 million in civil settlements from the university.