rehearsal

Riders and their horses of the Spanish Riding School of Vienna perform a dress rehearsal for the media at the SSE Arena in London, Britain November 10, 2016.   REUTERS/Peter Nicholls  TPX IMAGES OF THE DAY

Peter Nicholls/Reuters

A riders and his horse from the Spanish Riding School of Vienna perform a dress rehearsal at the SSE Arena in London, Britain November 10, 2016. Photo Peter Nicholls/Reuters

An Indian Air Force soldier tosses his rifle as he performs during the full-dress rehearsal for Indian Air Force Day at the Hindon air force station on the outskirts of New Delhi, India, October 6, 2016.

Adnan Abidi/Reuters

An Indian Air Force soldier tosses his rifle as he performs during the full-dress rehearsal for Indian Air Force Day at the Hindon air force station on the outskirts of New Delhi. Photo Adnan Abidi/Reuters 

 Indian paramilitary soldiers are seen rehearsing for the Republic Day parade during the early morning hours in New Delhi, India, 07 January 2016

Rajat Gupta/EPA

Indian paramilitary soldiers are seen rehearsing for the Republic Day parade during the early morning hours in New Delhi, India, on Thursday

Indian soldiers take part in the rehearsal for the Republic Day parade on a foggy winter morning in New Delhi, India

Adnan Abidi/Reuters

Indian sailors take part in the rehearsal for the Republic Day parade on a foggy winter morning in New Delhi, India

Indian soldiers of the Assam Rifles marc...Indian soldiers of the Assam Rifles march during a rehearsal for the forthcoming Republic Day parade on a foggy winter morning at Rajpath in New Delhi on January 4, 2016.  India will celebrate its 67th Republic Day on January 26 with a large military parade.   AFP PHOTO / CHANDAN KHANNAChandan Khanna/AFP/Getty Images

Chandan Khanna/AFP/Getty

Indian soldiers of the Assam Rifles march during a rehearsal for the forthcoming Republic Day parade on a foggy winter morning at Rajpath in New Delhi 

Russian navy battle ships station in the bay during a rehearsal of the Russian Navy Day parade in Sevastopol, Crimea, Friday, July 24, 2015. The Russian Navy Day is celebrated the last Sunday of July.

Alexander Polegenko/AP

Russian navy battle ships station in the bay during a rehearsal of the Russian Navy Day parade in Sevastopol, Crimea on Friday

Russian Emergency Ministry cadets march

Kirill Kudryavtsev/AFP/Getty Images

Russian Emergency Ministry cadets march as they take part in a rehearsal for the Victory Day military parade on Moscow’s Red Square on Wednesday. Russia will celebrate the 70th anniversary of the 1945 victory over Nazi Germany on May 9th.

Indian soldiers practice a march ahead of Republic Day parade in New Delhi, India, Wednesday, Jan. 21, 2015. U.S. President Barack Obama will be the "chief guest" at this year's parade, marked annually on Jan. 26.

Saurabh Das/AP

Soldiers practice ahead of the Republic Day parade in New Delhi, India, on Wednesday. US President Barack Obama will be the chief guest at the annual event.

Russian servicemen walk in formation as they take part in a rehearsal for the Victory Day military parade during a snowfall in central Moscow...Russian servicemen walk in formation as they take part in a rehearsal for the Victory Day military parade during a snowfall in central Moscow, May 7, 2014. Russia celebrates victory over Nazi Germany on May 9. REUTERS/Artur Bainozarov (RUSSIA -

Artur Bainozarov/Reuters

Russian servicemen take part in a rehearsal for the Victory Day military parade during a snowfall in central Moscow. Russia celebrates victory over Nazi Germany on May 9 

Indian soldiers take part in the rehearsal for the Republic Day parade on a cold winter morning in New Delhi...Indian soldiers take part in the rehearsal for the Republic Day parade on a cold winter morning in New Delhi January 9, 2014. India celebrates its annual Republic Day on January 26. REUTERS/Ahmad Masood

Ahmad Masood/Reuters

Indian soldiers take part in a rehearsal for the Republic Day parade on a cold winter morning in New Delhi. India celebrates Republic Day on January 26 

Polish Army (Wojsko Polskie) soldiers are reflected in a puddle as they march during a rehearsal for a parade prior to the Polish 'Independence Day' celebrations, in Warsaw, Poland, 05 November 2013.

Tomasz Gzell/EPA

Polish soldiers in Warsaw rehearse for a parade to mark National Independence Day on November 11

Members of the National Cadet C...TOPSHOTS Members of the National Cadet Corps (NCC) march past during a full dress rehearsal for Independence Day celebrations in Secunderabad, the twin city of Hyderabad on August 13, 2013. India will celebrate its 67th Independence Day on August 15.  AFP PHOTO / Noah SEELAMNOAH SEELAM/AFP/Getty Images

Noah Seelam/Getty

Members of India’s National Cadet Corps conduct a dress rehearsal for Independence Day celebrations in Secunderabad on Tuesday. India will celebrate its 67th Independence Day on Thursday. 

An Indian policewoman helps her comrade who fainted during the full-dress rehearsal for India's Independence Day celebrations in Chennai

Babu/Reuters

A policewoman helps a comrade who fainted during the full-dress rehearsal for India’s Independence Day celebrations in Chennai, south India on Tuesday.