Now Playing: Bloodshed in Cairo Caught on Tape

Now Playing: Army on Protests: Go Home 'For the Love of Egypt'

Now Playing: These realistic characters are actually made of cake

Now Playing: How to choose the best workout based on your personality

Now Playing: Reaction to Trump's order ending family separations

Now Playing: How will Trump's order affect separated children?

Now Playing: Protests erupt after fatal police shooting of unarmed teen

Now Playing: Flash flooding hits towns from Texas to Pennsylvania

Now Playing: Trump uses immigration reversal to rally his base

Now Playing: Turpin teen's 911 call from escape played in court

Now Playing: NASCAR driver's dad rescues him from fiery wreck

Now Playing: Jamie Foxx announces Anita Baker will be honored at BET Awards

Now Playing: 'GMA' Deals and Steals on must-have sunglasses, jewelry and more

Now Playing: Deputy smashes car window to save trapped bear

Now Playing: Box office wars could make movies cheaper

Now Playing: 'GMA' celebrates National Selfie Day

Now Playing: Fran Drescher dishes on 'Hotel Transylvania 3'

Now Playing: Imagine Dragons' frontman sheds light on plight of LGBTQ youth raised Mormon

Now Playing: Instagram reveals new video platform

Now Playing: How to rock summer's hottest looks