“Meltdown” means “the accidental melting of the core of a nuclear reactor”, and literally after that, a large displacement of radiation throughout the entire atmosphere. Here is how it works (VIDEO):

Multi-role fighter aircraft sales

Global fighter market leaders after 10 years

17:46 01/02/2011 Companies sharing world market for new multi-role fighters>>

Deadly blast at Moscow Domodedovo airport

Russian capital on edge after airport blast kills 35 (WRAPUP 4)

23:25 24/01/2011 Police in Moscow and other Russian cities stepped up security on Monday evening after an attack at the capital’s Domodedovo airport killed over 30 people and wounded scores earlier in the day.>>

Explosion at Moscow’s Domodedovo airport

19:40 24/01/2011 Over 30 people were killed and at least 130 injured in a suicide bombing that ripped through Domodedovo Airport’s international arrivals gate>>

Sukhoi Su-25 Frogfoot – Close Air Support (CAS) aircraft

Sukhoi Su-25 Frogfoot - Infographic © RIA Novosti

Infographic: RIA Novosti courtesy. Click on the picture above to enlarge it.