This is a touching video segment showing firefighters from Louisiana returning the favor they received seven years ago after Hurricane Katrina - now helping out their colleagues in New York after Hurricane Sandy.
An "Inward Lip Roll" (ILR) is a nonverbal signal of anxiety. More specifically it shows us that the psyche is trying to prevent the escalation and display of strong emotions - usually negative ones. Here, the normally stoic N.Y. firefighter is confessing his brotherly-love and sincere, deep-felt thanks to his Cajun comrades. Although partially obscured by his mustache, an ILR can be seen at 1:26-1:28, 1:29 and again at 1:31-1:32. Here there is some emotional dissonance present - a "good cry" or tearing-up is being partially suppressed.
Negotiation Body Language Secret # 377: Inward Lip Roll with a Bitter Smile
Nonverbal Communication Secret # 1439: Central Forehead Contraction & Inward Lip Roll - Devon Davis & April Davis
Negotiation Secret # 146: Anthony Weiner's Inward Lip Roll
Negotiation Secret # 45: Faith Hill's Inward Lip Roll
Nonverbal Communication Analysis # 1709: Peyton Manning's Agent Does Not Fully Believe