Now Playing: Potential persons of interest in ‘Empire’ star attack: Police

Now Playing: Circuit attorney questions police probe of officer’s death

Now Playing: Los Angeles Rams player gifts Super Bowl tickets to team custodian

Now Playing: Police probing sinkhole instead find secret tunnel to bank

Now Playing: Video: Elderly dementia patient left outside alone at night

Now Playing: Arctic cold stops USPS mail delivery in parts of 10 states

Now Playing: Roger Goodell breaks silence on controversial Saints-Rams call

Now Playing: 18-wheeler driver with machete causes highway standoff

Now Playing: School reveals machine that vends books, not candy

Now Playing: Teen jailed in $25 million tax refund scam

Now Playing: Armored-car driver wanted in theft caught: Police

Now Playing: Democrats renew push for equal pay

Now Playing: Swastikas found drawn on crib mattress at hotel, police say

Now Playing: Michael and Sara learn the art of plating take-out food

Now Playing: Michael Strahan’s ‘Shark Tank’ pitch

Now Playing: Michael and Sara keep it ‘All In The Family’

Now Playing: Son of BTK murder victims on how he moved on from tragedy

Now Playing: Family members of BTK victims remember hearing details of murders

Now Playing: What is a ‘frost quake’?

Now Playing: Giant panda takes a nap