Related Clues:

• Increase in verticality
• Really get up
• Fly like the eagles
• Eagles do it
• Hang-glide, e.g.
• Do some high flying
• Rise to great heights
• Fly like a hawk
• Go sky-high
• Skim the clouds
• Rise above the clouds
• Really take off
• Get high?
• Reach a high altitude
• Go up, up, up