The helicopters were seen lining up on the runway to attach the national flag and the Party flag in the early hours of the day.

This symbolic performance will be a highlight of this year's military parade.

The aircrews carried out strict formation drills, ensuring precise distance, altitude, and speed control. 

They also coordinated closely with ground forces to fine-tune flight paths to synchronize with the ground parade activities scheduled for April 30.

The rehearsal also served to assess flight techniques, the ability of flight teams to coordinate with each other, and to test the performance of the flag-dragging equipment to ensure utmost safety during the event.

Beneath the early morning sun, the national flag of Vietnam, which is the red flag with a yellow star in the center, fluttered proudly in the sky, evoking feelings of patriotism and the historical significance of April.

With clear skies and warm sunshine, the sight of the helicopters towing the flag appeared even more majestic and awe-inspiring.

The roar of the helicopter rotors and the growl of fighter jet engines filled the air, echoing powerfully across the sky.

Fifty years ago, the Vietnamese people and armed forces fought for reunification. It was a struggle that involved immense sacrifices, unforgettable memories, and heroic feats that reverberated through the land.

On April 30, 1975, that historic day marked the full reunification of Vietnam, as the red flag with a yellow star in the center waved proudly amidst jubilant music.

As planned, this year's Reunification Day celebrations will feature a large-scale military parade and march in Ho Chi Minh City, with the participation of thousands of officers and soldiers, along with various modern military vehicles from multiple branches of the armed forces.

In the lead-up to the anniversary, helicopter and fighter jet squadrons have been intensively rehearsing.

The training flights began at Bien Hoa Airbase in Dong Nai Province, flying over downtown Ho Chi Minh City.

The main area for the flight display will be over the Reunification Hall, Le Duan Boulevard, and some streets in the heart of Ho Chi Minh City, extending to the Bach Dang Wharf riverside area.

Several types of aircraft are involved in the rehearsals, including Mi-8 and Mi-17 helicopters, Yak-130 light combat aircraft, and Su-30MK2 fighter jets.