Business cards of the builder of a proof of concept 3D printed house are pictured in Long Island, New York, U.S., February 11, 2021. Picture taken February 11, 2021. REUTERS/Carlo Allegri

Builder Garnik Grigoryan, 54, has a meal together with his acquaintance Vagan Arutsunyan, 53, next to a Kalashnikov rifle, which he recently received from local authorities of the breakaway region of Nagorno-Karabakh during a military conflict in the settlement of Sarushen, October 16, 2020. REUTERS/Stringer

Builder Garnik Grigoryan, 54, walks with a Kalashnikov rifle, which he recently received from local authorities during a military conflict over the breakaway region of Nagorno-Karabakh, in the settlement of Sarushen, October 16, 2020. REUTERS/Stringer

A builder trowel lies next to a pile of mortar on a new Barratt Homes housing development near Warrington, Britain, August 6, 2020. REUTERS/Phil Noble

Builders work on a new Barratt Homes housing development near Warrington, Britain, August 6, 2020. REUTERS/Phil Noble

Builders work on a new Barratt Homes housing development near Warrington, Britain, August 6, 2020. REUTERS/Phil Noble

A builder stands on a scaffolding as he works on a terraced house in Oldham, as the town faces local restrictions in an effort to avoid a local lockdown being forced upon the area amid the coronavirus disease (COVID-19) outbreak, Britain July 30, 2020. REUTERS/Phil Noble

A builder stands on a scaffolding as he works on a terraced house in Oldham, as the town faces local restrictions in an effort to avoid a local lockdown being forced upon the area amid the coronavirus disease (COVID-19) outbreak, Britain July 30, 2020. REUTERS/Phil Noble

A builder stands on a scaffolding as he works on a terraced house in Oldham, as the town faces local restrictions in an effort to avoid a local lockdown being forced upon the area amid the coronavirus disease (COVID-19) outbreak, Britain July 30, 2020. REUTERS/Phil Noble

A builder walks on top of a new construction site as a derelict property is seen beside it in Galway, Ireland, July 16, 2020. REUTERS/Clodagh Kilcoyne

Miguel Flores Torres, 24, whose wife had a home birth during the coronavirus disease (COVID-19) outbreak, pours cement as he remodels a home while working as a builder in Villa Olimpica, Mexico City, Mexico, June 17, 2020. REUTERS/Gustavo Graf SEARCH "COVID-19 MEXICO BIRTH" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

Miguel Flores Torres, 24, whose wife had a home birth during the coronavirus disease (COVID-19) outbreak, wears his work clothes before working on a home as a builder, in Villa Olimpica, Mexico City, Mexico, June 17, 2020. REUTERS/Gustavo Graf SEARCH "COVID-19 MEXICO BIRTH" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

Ibragim Artykov, builder from Tajikistan, poses for a picture during an interview amid the outbreak of the coronavirus disease (COVID-19) on the outskirts of Moscow, Russia April 21, 2020. Picture taken April 21, 2020. REUTERS/Dmitry Madorsky

Ibragim Artykov, builder from Tajikistan, poses for a picture during an interview amid the outbreak of the coronavirus disease (COVID-19) on the outskirts of Moscow, Russia April 21, 2020. Picture taken April 21, 2020. REUTERS/Dmitry Madorsky

Vacant lots are seen in a housing development as Franklin County commissioners vote to end recognition of Governor Jay Inslee’s "Stay Home, Stay Healthy" mandate and allow businesses and builders to get back to work, during the coronavirus disease (COVID-19) outbreak, in Pasco, Washington, U.S. April 22, 2020. REUTERS/David Ryder

Equipment sits idle in a development as Franklin County commissioners vote to end recognition of Governor Jay Inslee’s "Stay Home, Stay Healthy" mandate and allow businesses and builders to get back to work, during the coronavirus disease (COVID-19) outbreak, in Pasco, Washington, U.S. April 22, 2020. REUTERS/David Ryder

Builders work at the construction site of a multifunctional medical center of the Russian Defence Ministry for coronavirus disease (COVID-19) patients, in Rostov-on-Don, Russia April 9, 2020. REUTERS/Sergey Pivovarov

Builders work at the construction site of a multifunctional medical center of the Russian Defence Ministry for coronavirus disease (COVID-19) patients, in Rostov-on-Don, Russia April 9, 2020. REUTERS/Sergey Pivovarov

Builders work at a construction site of a new infectious hospital as an additional measure to prevent the spread of coronavirus disease (COVID-19) on the outskirts of Moscow, Russia March 25, 2020. REUTERS/Alexander Reshetnikov

Artist and builder of carnival floats, Jacques Tilly poses during the "Rosenmontag" (Rose Monday) parade in Duesseldorf, Germany February 24, 2020. REUTERS/Thilo Schmuelgen

Builders work at a Barratt housing development near Haywards Heath, Britain, February 20, 2020. REUTERS/Peter Nicholls

Builders work at a Barratt housing development near Haywards Heath, Britain, February 20, 2020. REUTERS/Peter Nicholls

Builders work at a Barratt housing development near Haywards Heath, Britain, February 20, 2020. REUTERS/Peter Nicholls

Builders work at a Barratt housing development near Haywards Heath, Britain, February 20, 2020. REUTERS/Peter Nicholls

Builders work at a Barratt housing development near Haywards Heath, Britain, February 20, 2020. REUTERS/Peter Nicholls

Builders work on the roof of a building at a Barratt housing development near Haywards Heath, Britain, February 20, 2020. REUTERS/Peter Nicholls

Builders work on the roof of a building at a Barratt housing development near Haywards Heath, Britain, February 20, 2020. REUTERS/Peter Nicholls

Builders work on the construction of the new Genoa bridge, also known as the Polcevera viaduct, in Genoa, Italy, February 5, 2020. Picture taken February 5, 2020. REUTERS/Yara Nardi

Builders work on one of the eighteen 40 metre-high columns that will support the new Genoa bridge, also known as the Polcevera viaduct, in Genoa, Italy, February 5, 2020. Picture taken February 5, 2020. REUTERS/Yara Nardi

Builders work on the construction of the new Genoa bridge, also known as the Polcevera viaduct, in Genoa, Italy, February 5, 2020. Picture taken February 5, 2020. REUTERS/Yara Nardi

Builders are pictured at the construction site of the new Genoa bridge, also known as the Polcevera viaduct, in Genoa, Italy, February 5, 2020. Picture taken February 5, 2020. REUTERS/Yara Nardi

Builders are pictured at the construction site of the new Genoa bridge, also known as the Polcevera viaduct, in Genoa, Italy, February 5, 2020. Picture taken February 5, 2020. REUTERS/Yara Nardi

Guarani Mbya indigenous people pass by the builder's billboard in front of an occupied area as they protest against tree cutting and the construction of an apartment complex near their land in Sao Paulo, Brazil, February 5, 2020. Picture taken February 5, 2020. REUTERS/Amanda Perobelli

Kath Dunn and her husband Rod, a builder, who lost their home in a bushfire are seen outside a borrowed caravan at a showground that was turned into an unofficial evacuation centre, in the town of Cobargo, Australia January 12, 2020. Picture taken January 12, 2020. REUTERS/Alkis Konstantinidis

Rod Dunn who is a builder, stands outside a borrowed caravan that he is now living in with his wife Kath Dunn, after they lost their home in a bushfire, at a showground that was turned into an unofficial evacuation centre in the town of Cobargo, New South Wales, Australia, January 12, 2020. REUTERS/Alkis Konstantinidis SEARCH "COBARGO BUSHFIRE" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

Britian's Prime Minister Boris Johnson jokes with builders during a visit to the Barratt Homes - Willow Grove housing development in Bedford, Britian November 21, 2019. Dan Kitwood/Pool via REUTERS

The logo of Airbus is pictured at the aircraft builder's headquarters of Airbus in Colomiers near Toulouse, France, November 15, 2019. REUTERS/Regis Duvignau

An Airbus A318 of Air France takes off at the aircraft builder's headquarters of Airbus in Colomiers near Toulouse, France, November 15, 2019. REUTERS/Regis Duvignau

The logo of GoAir airline is pictured on an A320neo aircraft at the builder's headquarters of Airbus in Colomiers near Toulouse, France, November 15, 2019. REUTERS/Regis Duvignau

The logo of GoAir airline is pictured on an A320neo aircraft at the builder's headquarters of Airbus in Colomiers near Toulouse, France, November 15, 2019. REUTERS/Regis Duvignau

An EasyJet Airbus A320 is pictured at the aircraft builder's headquarters of Airbus in Colomiers near Toulouse, France, November 15, 2019. REUTERS/Regis Duvignau

The logo of Gulf Air is pictured on tail of Airbus A321 aircraft at the aircraft builder's headquarters of Airbus in Colomiers near Toulouse, France, November 15, 2019. REUTERS/Regis Duvignau

A Gulf Air Airbus A321 aircraft prepares to take off at the aircraft builder's headquarters of Airbus in Colomiers near Toulouse, France, November 15, 2019. REUTERS/Regis Duvignau

The first Airbus A350 XWB aircraft of Fiji Airways prepares to take off at the aircraft builder's headquarters of Airbus in Colomiers near Toulouse, France, November 15, 2019. REUTERS/Regis Duvignau

The first Airbus A350 XWB aircraft of Fiji Airways takes off during a delivery ceremony at the aircraft builder's headquarters of Airbus in Colomiers near Toulouse, France, November 15, 2019. REUTERS/Regis Duvignau

The first Airbus A350 XWB aircraft of Fiji Airways takes off during a delivery ceremony at the aircraft builder's headquarters of Airbus in Colomiers near Toulouse, France, November 15, 2019. REUTERS/Regis Duvignau

Rolls Royce engine of the first Fiji Airways A350 XWB airliner is seen at the aircraft builder's headquarters of Airbus in Colomiers near Toulouse, France, November 15, 2019. REUTERS/Regis Duvignau

A landing gear of the first Fiji Airways A350 XWB airliner is seen at the aircraft builder's headquarters of Airbus in Colomiers near Toulouse, France, November 15, 2019. REUTERS/Regis Duvignau

A view shows the first Fiji Airways A350 XWB airliner at the aircraft builder's headquarters of Airbus in Colomiers near Toulouse, France, November 15, 2019. REUTERS/Regis Duvignau

A view shows the first Fiji Airways A350 XWB airliner at the aircraft builder's headquarters of Airbus in Colomiers near Toulouse, France, November 15, 2019. REUTERS/Regis Duvignau

Andries Viljoen, Fiji Airways Managing Director and Chief Executive Officer, Aiyaz Sayed-Khaiyum, Fijian Attorney-General and Minister responsible for Civil Aviation, David Houlihan, President at DAE Capital, Jacqueline Sutton, Chief Customer Officer at Rolls-Royce, Christian Scherer, Airbus Chief Commercial Officer, pose in front of the first Fiji Airways A350 XWB airliner at the aircraft builder's headquarters of Airbus in Colomiers near Toulouse, France, November 15, 2019. REUTERS/Regis Duvignau

Officials pose in front of the first Fiji Airways A350 XWB airliner during the delivery ceremony at the aircraft builder's headquarters of Airbus in Colomiers near Toulouse, France, November 15, 2019. REUTERS/Regis Duvignau

David Houlihan, President at DAE Capital, speaks during a news conference after the delivery of the first Fiji Airways A350 XWB airliner at the aircraft builder's headquarters of Airbus in Colomiers near Toulouse, France, November 15, 2019. REUTERS/Regis Duvignau

Aiyaz Sayed-Khaiyum, Fijian Attorney-General and Minister responsible for Civil Aviation, speaks during a news conference after the delivery of the first Fiji Airways A350 XWB airliner at the aircraft builder's headquarters of Airbus in Colomiers near Toulouse, France, November 15, 2019. REUTERS/Regis Duvignau

Andries Viljoen, Fiji Airways Managing Director and Chief Executive Officer, speaks during a news conference after the delivery of the first Fiji Airways A350 XWB airliner at the aircraft builder's headquarters of Airbus in Colomiers near Toulouse, France, November 15, 2019. REUTERS/Regis Duvignau

Christian Scherer, Airbus Chief Commercial Officer, speaks during a news conference for the delivery of the first Fiji Airways A350 XWB airliner at the aircraft builder's headquarters of Airbus in Colomiers near Toulouse, France, November 15, 2019. REUTERS/Regis Duvignau

Christian Scherer, Airbus Chief Commercial Officer, speaks during a news conference for the delivery of the first Fiji Airways A350 XWB airliner at the aircraft builder's headquarters of Airbus in Colomiers near Toulouse, France, November 15, 2019. REUTERS/Regis Duvignau

Women walk down the stairs decorated with the logo of Fiji Airways at the aircraft builder's headquarters of Airbus in Colomiers near Toulouse, France, November 15, 2019. REUTERS/Regis Duvignau

The logo of Fiji Airways is seen during a ceremony for the first Fiji Airways A350 XWB airliner at the aircraft builder's headquarters of Airbus in Colomiers near Toulouse, France, November 15, 2019. REUTERS/Regis Duvignau

The logo of Garuda Indonesia is pictured on an Airbus A330 aircraft parked at the aircraft builder's headquarters of Airbus in Colomiers near Toulouse, France, November 15, 2019. REUTERS/Regis Duvignau