A former Seneca Valley Junior ROTC instructor is guilty of 20 counts of sexual assault and child endangerment.

A Butler County jury returned its verdict at 4:15 p.m. Thursday.

Kevin Johnson, who’s 54th birthday is today, is free on $50,000 bail by Butler County Judge Tim McCune.

Johnson was charged with sexual assaulting two Seneca Valley students who were in the ROTC program several years ago.

Butler County Assistant District Attorney Mark Lope said two of those charges, involuntary deviant sexual intercourse and unlawful contact, are first-degree felonies.

But he would not speculate on the possibility of sentencing for Johnson.

Defense attorney David Shrager said he was disappointed with the trial outcome.

“In this environment, post-Penn State (University child sex abuse scandal), it is difficult for anyone charged with this to get a fair shake,” he said.

Shrager said he “absolutely” expects to file an appeal on Johnson’s behalf.

Sentencing is set for Jan. 19.